Add more checkstyle tests

- Lines containing tab(s) after space
- Usage of printStackTrace
- Usage of println
- Add SupressionCommentFilter module

SuppressionCommentFilter can be enabled with
// CHECKSTYLE:OFF
and disabled with
// CHECKSTYLE:ON

config/checkstyle.xml

@@ -6,6 +6,7 @@
 	<module name="SuppressionFilter">
 		<property name="file" value="config/suppressions.xml"/>
 	</module>
+	<module name="SuppressionCommentFilter"/>
 	<module name="Header">
 		<property name="headerFile" value="config/header.txt"/>
 		<property name="ignoreLines" value="3"/>
@@ -22,6 +23,10 @@
 		<property name="format" value="^\s+$"/>
 		<property name="message" value="Line containing only whitespace character(s)"/>
 	</module>
+	<module name="RegexpSingleline">
+		<property name="format" value="^ +\t+"/>
+		<property name="message" value="Line containing tab(s) after space"/>
+	</module>
 	<!-- TODO enable this once eclilpse does no longer add javadoc with trailing whitespaces
 	<module name="RegexpSingleline">
 		<property name="format" value="^.*\S+\s+$"/>
@@ -29,6 +34,7 @@
 	</module>
 	-->
 	<module name="TreeWalker">
+		<module name="FileContentsHolder"/>
 		<module name="UnusedImports">
 			<property name="processJavadoc" value="true"/>
 		</module>
@@ -40,5 +46,15 @@
 		<module name="GenericWhitespace"/>
 		<module name="EmptyStatement"/>
 		<module name="PackageDeclaration"/>
+		<module name="RegexpSinglelineJava">
+			<property name="format" value="printStackTrace"/>
+			<property name="message" value="Usage of printStackTrace"/>
+			<property name="ignoreComments" value="true"/>
+		</module>
+		<module name="RegexpSinglelineJava">
+			<property name="format" value="println"/>
+			<property name="message" value="Usage of println"/>
+			<property name="ignoreComments" value="true"/>
+		</module>
 	</module>
 </module>

smack-android/src/main/java/org/jivesoftware/smackx/debugger/android/AndroidDebugger.java

@@ -45,4 +45,9 @@ public class AndroidDebugger extends AbstractDebugger {
     protected void log(String logMessage) {
                 Log.d("SMACK", logMessage);
     }
+
+    @Override
+    protected void log(String logMessage, Throwable throwable) {
+                Log.d("SMACK", logMessage, throwable);
+    }
 }

smack-core/src/main/java/org/jivesoftware/smack/PacketCollector.java

@@ -244,10 +244,12 @@ public class PacketCollector {
      */
     protected void processPacket(Stanza packet) {
         if (packetFilter == null || packetFilter.accept(packet)) {
+            // CHECKSTYLE:OFF
         	while (!resultQueue.offer(packet)) {
         		// Since we know the queue is full, this poll should never actually block.
         		resultQueue.poll();
         	}
+            // CHECKSTYLE:ON
             if (collectorToReset != null) {
                 collectorToReset.waitStart = System.currentTimeMillis();
             }

smack-core/src/main/java/org/jivesoftware/smack/debugger/AbstractDebugger.java

@@ -98,15 +98,13 @@ public abstract class AbstractDebugger implements SmackDebugger {
                 log(
                         "XMPPConnection closed due to an exception (" +
                         connection.getConnectionCounter() +
-                        ")");
+                        ")", e);
-                e.printStackTrace();
             }
             public void reconnectionFailed(Exception e) {
                 log(
                         "Reconnection failed due to an exception (" +
                         connection.getConnectionCounter() +
-                        ")");
+                        ")", e);
-                e.printStackTrace();
             }
             public void reconnectionSuccessful() {
                 log(
@@ -125,6 +123,8 @@ public abstract class AbstractDebugger implements SmackDebugger {
 
     protected abstract void log(String logMessage);
 
+    protected abstract void log(String logMessage, Throwable throwable);
+
     public Reader newConnectionReader(Reader newReader) {
         reader.removeReaderListener(readerListener);
         ObservableReader debugReader = new ObservableReader(newReader);

smack-core/src/main/java/org/jivesoftware/smack/debugger/ConsoleDebugger.java

@@ -18,7 +18,9 @@ package org.jivesoftware.smack.debugger;
 
 import org.jivesoftware.smack.XMPPConnection;
 
+import java.io.PrintWriter;
 import java.io.Reader;
+import java.io.StringWriter;
 import java.io.Writer;
 import java.text.SimpleDateFormat;
 import java.util.Date;
@@ -47,7 +49,19 @@ public class ConsoleDebugger extends AbstractDebugger {
         synchronized (dateFormatter) {
             formatedDate = dateFormatter.format(new Date());
         }
+        // CHECKSTYLE:OFF
         System.out.println(formatedDate + ' ' + logMessage);
+        // CHECKSTYLE:ON
+    }
+
+    @Override
+    protected void log(String logMessage, Throwable throwable) {
+        StringWriter sw = new StringWriter();
+        PrintWriter pw = new PrintWriter(sw);
+        // CHECKSTYLE:OFF
+        throwable.printStackTrace(pw);
+        // CHECKSTYLE:ON
+        log(logMessage + sw);
     }
 
 }

smack-core/src/main/java/org/jivesoftware/smack/debugger/JulDebugger.java

@@ -20,6 +20,7 @@ import org.jivesoftware.smack.XMPPConnection;
 
 import java.io.Reader;
 import java.io.Writer;
+import java.util.logging.Level;
 import java.util.logging.Logger;
 
 /**
@@ -46,4 +47,8 @@ public class JulDebugger extends AbstractDebugger {
         LOGGER.fine(logMessage);
     }
 
+    @Override
+    protected void log(String logMessage, Throwable throwable) {
+        LOGGER.log(Level.FINE, logMessage, throwable);
+    }
 }

smack-core/src/main/java/org/jivesoftware/smack/util/PacketParserUtils.java

@@ -528,7 +528,9 @@ public class PacketParserUtils {
 
         String language = getLanguageAttribute(parser);
         if (language != null && !"".equals(language.trim())) {
+        // CHECKSTYLE:OFF
         	presence.setLanguage(language);
+        // CHECKSTYLE:ON
         }
 
         // Parse sub-elements
@@ -993,15 +995,19 @@ public class PacketParserUtils {
 
     }
     private static String getLanguageAttribute(XmlPullParser parser) {
+    // CHECKSTYLE:OFF
     	for (int i = 0; i < parser.getAttributeCount(); i++) {
+    // CHECKSTYLE:ON
             String attributeName = parser.getAttributeName(i);
             if ( "xml:lang".equals(attributeName) ||
                     ("lang".equals(attributeName) &&
                             "xml".equals(parser.getAttributePrefix(i)))) {
+    // CHECKSTYLE:OFF
     			return parser.getAttributeValue(i);
     		}
     	}
     	return null;
+    // CHECKSTYLE:ON
     }
 
     @Deprecated

smack-core/src/test/java/org/jivesoftware/smack/DummyConnection.java

@@ -134,17 +134,11 @@ public class DummyConnection extends AbstractXMPPConnection {
 
     @Override
     public void send(PlainStreamElement element) {
-        if (SmackConfiguration.DEBUG) {
-            System.out.println("[SEND]: " + element.toXML());
-        }
         queue.add(element);
     }
 
     @Override
     protected void sendStanzaInternal(Stanza packet) {
-        if (SmackConfiguration.DEBUG) {
-            System.out.println("[SEND]: " + packet.toXML());
-        }
         queue.add(packet);
     }
 
@@ -194,10 +188,6 @@ public class DummyConnection extends AbstractXMPPConnection {
      * @param packet the packet to process.
      */
     public void processPacket(Stanza packet) {
-        if (SmackConfiguration.DEBUG) {
-            System.out.println("[RECV]: " + packet.toXML());
-        }
-
         invokePacketCollectorsAndNotifyRecvListeners(packet);
     }
 

smack-core/src/test/java/org/jivesoftware/smack/ThreadedDummyConnection.java

@@ -20,6 +20,8 @@ import java.io.IOException;
 import java.util.concurrent.ArrayBlockingQueue;
 import java.util.concurrent.BlockingQueue;
 import java.util.concurrent.LinkedBlockingQueue;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 
 import org.jivesoftware.smack.SmackException.NotConnectedException;
 import org.jivesoftware.smack.packet.IQ;
@@ -33,6 +35,8 @@ import org.jivesoftware.smack.packet.IQ.Type;
  *
  */
 public class ThreadedDummyConnection extends DummyConnection {
+    private static final Logger LOGGER = Logger.getLogger(ThreadedDummyConnection.class.getName());
+
     private BlockingQueue<IQ> replyQ = new ArrayBlockingQueue<IQ>(1);
     private BlockingQueue<Stanza> messageQ = new LinkedBlockingQueue<Stanza>(5);
     private volatile boolean timeout = false;
@@ -82,7 +86,7 @@ public class ThreadedDummyConnection extends DummyConnection {
         if (!messageQ.isEmpty())
             new ProcessQueue(messageQ).start();
         else
-            System.out.println("No messages to process");
+            LOGGER.warning("No messages to process");
     }
 
     class ProcessQueue extends Thread {
@@ -97,7 +101,7 @@ public class ThreadedDummyConnection extends DummyConnection {
             try {
                 processPacket(processQ.take());
             } catch (InterruptedException e) {
-                e.printStackTrace();
+                LOGGER.log(Level.WARNING, "exception", e);
             }
         }
     }

smack-core/src/test/java/org/jivesoftware/smack/util/PacketParserUtilsTest.java

@@ -754,25 +754,30 @@ public class PacketParserUtilsTest {
 
     @Test
     public void validateSimplePresence() throws Exception {
+        // CHECKSTYLE:OFF
     	String stanza = "<presence from='juliet@example.com/balcony' to='romeo@example.net'/>";
 
     	Presence presence = PacketParserUtils.parsePresence(PacketParserUtils.getParserFor(stanza));
 
     	assertXMLEqual(stanza, presence.toXML().toString());
+        // CHECKSTYLE:ON
     }
 
     @Test
     public void validatePresenceProbe() throws Exception {
+        // CHECKSTYLE:OFF
     	String stanza = "<presence from='mercutio@example.com' id='xv291f38' to='juliet@example.com' type='unsubscribed'/>";
 
     	Presence presence = PacketParserUtils.parsePresence(PacketParserUtils.getParserFor(stanza));
 
     	assertXMLEqual(stanza, presence.toXML().toString());
     	assertEquals(Presence.Type.unsubscribed, presence.getType());
+        // CHECKSTYLE:ON
     }
 
     @Test
     public void validatePresenceOptionalElements() throws Exception {
+        // CHECKSTYLE:OFF
     	String stanza = "<presence xml:lang='en' type='unsubscribed'>"
     			+ "<show>dnd</show>"
     			+ "<status>Wooing Juliet</status>"
@@ -786,6 +791,7 @@ public class PacketParserUtilsTest {
     	assertEquals("en", presence.getLanguage());
     	assertEquals("Wooing Juliet", presence.getStatus());
     	assertEquals(1, presence.getPriority());
+        // CHECKSTYLE:ON
     }
 
     @Test

smack-debug/src/main/java/org/jivesoftware/smackx/debugger/EnhancedDebugger.java

@@ -289,8 +289,10 @@ public class EnhancedDebugger implements SmackDebugger {
                 new DefaultTableModel(
                         new Object[]{"Hide", "Timestamp", "", "", "Message", "Id", "Type", "To", "From"},
                         0) {
+                    // CHECKSTYLE:OFF
         			private static final long serialVersionUID = 8136121224474217264L;
 					public boolean isCellEditable(int rowIndex, int mColIndex) {
+                    // CHECKSTYLE:ON
                         return false;
                     }
 
@@ -583,7 +585,7 @@ public class EnhancedDebugger implements SmackDebugger {
                         connection.sendStanza(packetToSend);
                     }
                     catch (InterruptedException | NotConnectedException e1) {
-                        e1.printStackTrace();
+                        LOGGER.log(Level.WARNING, "exception", e);
                     }
                 }
             }
@@ -704,8 +706,10 @@ public class EnhancedDebugger implements SmackDebugger {
                 new DefaultTableModel(new Object[][]{{"IQ", 0, 0}, {"Message", 0, 0},
                         {"Presence", 0, 0}, {"Other", 0, 0}, {"Total", 0, 0}},
                         new Object[]{"Type", "Received", "Sent"}) {
+                    // CHECKSTYLE:OFF
         			private static final long serialVersionUID = -6793886085109589269L;
 					public boolean isCellEditable(int rowIndex, int mColIndex) {
+                    // CHECKSTYLE:ON
                         return false;
                     }
                 };

smack-extensions/src/main/java/org/jivesoftware/smackx/privacy/packet/Privacy.java

@@ -93,11 +93,15 @@ public class Privacy extends IQ {
      */
     public void deletePrivacyList(String listName) {
         // Remove the list from the cache
+        // CHECKSTYLE:OFF
     	this.getItemLists().remove(listName);
+        // CHECKSTYLE:ON
 
         // Check if deleted list was the default list
         if (this.getDefaultName() != null && listName.equals(this.getDefaultName())) {
+        // CHECKSTYLE:OFF
         	this.setDefaultName(null);
+        // CHECKSTYLE:ON
         }
     }
 
@@ -108,11 +112,13 @@ public class Privacy extends IQ {
      */
     public List<PrivacyItem> getActivePrivacyList() {
         // Check if we have the default list
+        // CHECKSTYLE:OFF
         if (this.getActiveName() == null) {
         	return null;
         } else {
         	return this.getItemLists().get(this.getActiveName());
         }
+        // CHECKSTYLE:ON
     }
 
     /**
@@ -122,11 +128,13 @@ public class Privacy extends IQ {
      */
     public List<PrivacyItem> getDefaultPrivacyList() {
         // Check if we have the default list
+        // CHECKSTYLE:OFF
         if (this.getDefaultName() == null) {
         	return null;
         } else {
         	return this.getItemLists().get(this.getDefaultName());
         }
+        // CHECKSTYLE:ON
     }
 
     /**
@@ -147,6 +155,7 @@ public class Privacy extends IQ {
      * @return a List with {@link PrivacyItem}
      */
     public PrivacyItem getItem(String listName, int order) {
+        // CHECKSTYLE:OFF
     	Iterator<PrivacyItem> values = getPrivacyList(listName).iterator();
     	PrivacyItem itemFound = null;
     	while (itemFound == null && values.hasNext()) {
@@ -156,6 +165,7 @@ public class Privacy extends IQ {
 			}
 		}
     	return itemFound;
+        // CHECKSTYLE:ON
     }
 
     /**
@@ -169,7 +179,9 @@ public class Privacy extends IQ {
            this.setDefaultName(newDefault);
            return true;
         } else {
+            // CHECKSTYLE:OFF
         	return false; 
+            // CHECKSTYLE:ON
         }
     }
 
@@ -179,7 +191,9 @@ public class Privacy extends IQ {
      * @param listName name of the list to remove.
      */
      public void deleteList(String listName) {
+     // CHECKSTYLE:OFF
     	 this.getItemLists().remove(listName);
+     // CHECKSTYLE:ON
      }
 
     /**
@@ -188,9 +202,11 @@ public class Privacy extends IQ {
      *
      * @return the name of the active list.
      */
+    // CHECKSTYLE:OFF
 	public String getActiveName() {
 		return activeName;
 	}
+    // CHECKSTYLE:ON
 
     /**
      * Sets the name associated with the active list set for the session. Communications
@@ -198,9 +214,11 @@ public class Privacy extends IQ {
      * 
      * @param activeName is the name of the active list.
      */
+    // CHECKSTYLE:OFF
 	public void setActiveName(String activeName) {
 		this.activeName = activeName;
 	}
+    // CHECKSTYLE:ON
 
     /**
      * Returns the name of the default list that applies to the user as a whole. Default list is 
@@ -209,9 +227,11 @@ public class Privacy extends IQ {
      * 
      * @return the name of the default list.
      */
+    // CHECKSTYLE:OFF
 	public String getDefaultName() {
 		return defaultName;
 	}
+    // CHECKSTYLE:ON
 
     /**
      * Sets the name of the default list that applies to the user as a whole. Default list is 
@@ -222,9 +242,11 @@ public class Privacy extends IQ {
      * 
      * @param defaultName is the name of the default list.
      */
+    // CHECKSTYLE:OFF
 	public void setDefaultName(String defaultName) {
 		this.defaultName = defaultName;
 	}
+    // CHECKSTYLE:ON
 
     /**
      * Returns the collection of privacy list that the user holds. A Privacy List contains a set of 
@@ -234,42 +256,51 @@ public class Privacy extends IQ {
      * @return a map where the key is the name of the list and the value the 
      * collection of privacy items.
      */
+    // CHECKSTYLE:OFF
 	public Map<String, List<PrivacyItem>> getItemLists() {
 		return itemLists;
 	}
+    // CHECKSTYLE:ON
 
     /** 
      * Returns whether the receiver allows or declines the use of an active list.
      * 
      * @return the decline status of the list.
      */
+    // CHECKSTYLE:OFF
 	public boolean isDeclineActiveList() {
 		return declineActiveList;
 	}
+    // CHECKSYTLE:ON
 
     /** 
      * Sets whether the receiver allows or declines the use of an active list.
      * 
      * @param declineActiveList indicates if the receiver declines the use of an active list.
      */
+    // CHECKSTYLE:OFF
 	public void setDeclineActiveList(boolean declineActiveList) {
 		this.declineActiveList = declineActiveList;
 	}
+    // CHECKSTYLE:ON
 
     /** 
      * Returns whether the receiver allows or declines the use of a default list.
      * 
      * @return the decline status of the list.
      */
+    // CHECKSTYLE:OFF
 	public boolean isDeclineDefaultList() {
 		return declineDefaultList;
 	}
+    // CHECKSTYLE:ON
 
     /** 
      * Sets whether the receiver allows or declines the use of a default list.
      * 
      * @param declineDefaultList indicates if the receiver declines the use of a default list.
      */
+    // CHECKSTYLE:OFF
 	public void setDeclineDefaultList(boolean declineDefaultList) {
 		this.declineDefaultList = declineDefaultList;
 	}
@@ -282,10 +313,12 @@ public class Privacy extends IQ {
 	public Set<String> getPrivacyListNames() {
 		return this.itemLists.keySet();
 	}
+    // CHECKSTYLE:ON
 
     @Override
     protected IQChildElementXmlStringBuilder getIQChildElementBuilder(IQChildElementXmlStringBuilder buf) {
         buf.rightAngleBracket();
+        // CHECKSTYLE:OFF
 
         // Add the active tag
         if (this.isDeclineActiveList()) {
@@ -323,7 +356,7 @@ public class Privacy extends IQ {
 				buf.append("</list>");
 			}
 		}
-
+    // CHECKSTYLE:ON
         return buf;
     }
 

smack-extensions/src/main/java/org/jivesoftware/smackx/privacy/packet/PrivacyItem.java

@@ -131,8 +131,10 @@ public class PrivacyItem {
      * @return the allow communication status.
      */
     public boolean isAllow() {
+    // CHECKSTYLE:OFF
 		return allow;
 	}
+    // CHECKSTYLE:ON
 
     /**
      * Returns whether the receiver allow or deny incoming IQ stanzas or not.
@@ -140,8 +142,10 @@ public class PrivacyItem {
      * @return the iq filtering status.
      */
     public boolean isFilterIQ() {
+    // CHECKSTYLE:OFF
 		return filterIQ;
 	}
+    // CHECKSTYLE:ON
 
     /**
      * Sets whether the receiver allows or denies incoming IQ stanzas or not.
@@ -149,8 +153,11 @@ public class PrivacyItem {
      * @param filterIQ indicates if the receiver allows or denies incoming IQ stanzas.
      */
     public void setFilterIQ(boolean filterIQ) {
+    // CHECKSTYLE:OFF
+
 		this.filterIQ = filterIQ;
 	}
+    // CHECKSTYLE:ON
 
     /**
      * Returns whether the receiver allows or denies incoming messages or not.
@@ -158,8 +165,10 @@ public class PrivacyItem {
      * @return the message filtering status.
      */
     public boolean isFilterMessage() {
+        // CHECKSTYLE:OFF
 		return filterMessage;
 	}
+    // CHECKSTYLE:ON
 
     /**
      * Sets wheather the receiver allows or denies incoming messages or not.
@@ -167,8 +176,10 @@ public class PrivacyItem {
      * @param filterMessage indicates if the receiver allows or denies incoming messages or not.
      */
     public void setFilterMessage(boolean filterMessage) {
+        // CHECKSTYLE:OFF
 		this.filterMessage = filterMessage;
 	}
+    // CHECKSTYLE:ON
 
     /**
      * Returns whether the receiver allows or denies incoming presence or not.
@@ -176,8 +187,10 @@ public class PrivacyItem {
      * @return the iq filtering incoming presence status.
      */
     public boolean isFilterPresenceIn() {
+        // CHECKSTYLE:OFF
 		return filterPresenceIn;
 	}
+    // CHECKSTYLE:ON
 
     /**
      * Sets whether the receiver allows or denies incoming presence or not.
@@ -185,8 +198,10 @@ public class PrivacyItem {
      * @param filterPresenceIn indicates if the receiver allows or denies filtering incoming presence.
      */
     public void setFilterPresenceIn(boolean filterPresenceIn) {
+        // CHECKSTYLE:OFF
 		this.filterPresenceIn = filterPresenceIn;
 	}
+    // CHECKSTYLE:ON
 
     /**
      * Returns whether the receiver allows or denies incoming presence or not.
@@ -194,8 +209,10 @@ public class PrivacyItem {
      * @return the iq filtering incoming presence status.
      */
     public boolean isFilterPresenceOut() {
+        // CHECKSTYLE:OFF
 		return filterPresenceOut;
 	}
+    // CHECKSTYLE:ON
 
     /**
      * Sets whether the receiver allows or denies outgoing presence or not.
@@ -203,8 +220,10 @@ public class PrivacyItem {
      * @param filterPresenceOut indicates if the receiver allows or denies filtering outgoing presence
      */
     public void setFilterPresenceOut(boolean filterPresenceOut) {
+        // CHECKSTYLE:OFF
 		this.filterPresenceOut = filterPresenceOut;
 	}
+    // CHECKSTYLE:ON
 
     /**
      * Returns the order where the receiver is processed. List items are processed in
@@ -216,8 +235,10 @@ public class PrivacyItem {
      * @return the order number.
      */
     public long getOrder() {
+        // CHECKSTYLE:OFF
 		return order;
 	}
+    // CHECKSTYLE:ON
 
     /**
      * Returns the type hold the kind of communication it will allow or block.
@@ -227,7 +248,9 @@ public class PrivacyItem {
      */
     public Type getType() {
         return type;
+    // CHECKSTYLE:OFF
 	}
+    // CHECKSTYLE:ON
 
     /**
      * Returns the element identifier to apply the action.
@@ -242,7 +265,9 @@ public class PrivacyItem {
      */
     public String getValue() {
         return value;
+        // CHECKSTYLE:OFF
 	}
+    // CHECKSTYLE:ON
 
     /**
      * Returns whether the receiver allows or denies every kind of communication.
@@ -253,6 +278,7 @@ public class PrivacyItem {
      * @return the all communications status.
      */
     public boolean isFilterEverything() {
+        // CHECKSTYLE:OFF
 		return !(this.isFilterIQ() || this.isFilterMessage() || this.isFilterPresenceIn()
 				|| this.isFilterPresenceOut());
 	}
@@ -295,6 +321,7 @@ public class PrivacyItem {
             }
         	buf.append("</item>");
         }
+        // CHECKSTYLE:ON
         return buf.toString();
     }
 

smack-extensions/src/main/java/org/jivesoftware/smackx/privacy/provider/PrivacyProvider.java

@@ -45,6 +45,7 @@ public class PrivacyProvider extends IQProvider<Privacy> {
         while (!done) {
             int eventType = parser.next();
             if (eventType == XmlPullParser.START_TAG) {
+                // CHECKSTYLE:OFF
                 if (parser.getName().equals("active")) {
                 	String activeName = parser.getAttributeValue("", "name");
                 	if (activeName == null) {
@@ -61,6 +62,7 @@ public class PrivacyProvider extends IQProvider<Privacy> {
                 		privacy.setDefaultName(defaultName);
                 	}
                 }
+                // CHECKSTYLE:ON
                 else if (parser.getName().equals("list")) {
                     parseList(parser, privacy);
                 }
@@ -84,7 +86,9 @@ public class PrivacyProvider extends IQProvider<Privacy> {
             int eventType = parser.next();
             if (eventType == XmlPullParser.START_TAG) {
                 if (parser.getName().equals("item")) {
+                    // CHECKSTYLE:OFF
                 	items.add(parseItem(parser));
+                    // CHECKSTYLE:ON
                 }
             }
             else if (eventType == XmlPullParser.END_TAG) {
@@ -95,10 +99,12 @@ public class PrivacyProvider extends IQProvider<Privacy> {
         }
 
         privacy.setPrivacyList(listName, items);
+    // CHECKSTYLE:OFF
 	}
 
 	// Parse the list complex type
 	private static PrivacyItem parseItem(XmlPullParser parser) throws XmlPullParserException, IOException, SmackException {
+    // CHECKSTYLE:ON
         // Retrieves the required attributes
         String actionValue = parser.getAttributeValue("", "action");
         // Set the order number, this attribute is required
@@ -135,7 +141,9 @@ public class PrivacyProvider extends IQProvider<Privacy> {
         }
         parseItemChildElements(parser, item);
         return item;
+    // CHECKSTYLE:OFF
 	}
+    // CHECKSTYLE:ON
 
     private static void parseItemChildElements(XmlPullParser parser, PrivacyItem privacyItem) throws XmlPullParserException, IOException {
         final int initialDepth = parser.getDepth();

smack-extensions/src/main/java/org/jivesoftware/smackx/pubsub/Item.java

@@ -85,7 +85,9 @@ public class Item extends NodeExtension
 	 */
     public Item(String itemId, String nodeId) 
     {
+    // CHECKSTYLE:OFF
     	super(PubSubElementType.ITEM_EVENT, nodeId);
+    // CHECKSTYLE:ON
         id = itemId;
     }
 

smack-extensions/src/test/java/org/jivesoftware/smackx/bytestreams/socks5/Socks5TestProxy.java

@@ -26,6 +26,8 @@ import java.net.SocketException;
 import java.net.UnknownHostException;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 
 import org.jivesoftware.smack.SmackException;
 
@@ -36,6 +38,7 @@ import org.jivesoftware.smack.SmackException;
  * @author Henning Staib
  */
 public class Socks5TestProxy {
+    private static final Logger LOGGER = Logger.getLogger(Socks5TestProxy.class.getName());
 
     /* SOCKS5 proxy singleton */
     private static Socks5TestProxy socks5Server;
@@ -102,7 +105,7 @@ public class Socks5TestProxy {
             this.serverThread.start();
         }
         catch (IOException e) {
-            e.printStackTrace();
+            LOGGER.log(Level.SEVERE, "exception", e);
             // do nothing
         }
     }
@@ -120,7 +123,7 @@ public class Socks5TestProxy {
         }
         catch (IOException e) {
             // do nothing
-            e.printStackTrace();
+            LOGGER.log(Level.SEVERE, "exception", e);
         }
 
         if (this.serverThread != null && this.serverThread.isAlive()) {
@@ -130,7 +133,7 @@ public class Socks5TestProxy {
             }
             catch (InterruptedException e) {
                 // do nothing
-                e.printStackTrace();
+                LOGGER.log(Level.SEVERE, "exception", e);
             }
         }
         this.serverThread = null;
@@ -176,7 +179,7 @@ public class Socks5TestProxy {
                 try {
                     wait(5000);
                 } catch (InterruptedException e) {
-                    e.printStackTrace();
+                    LOGGER.log(Level.SEVERE, "exception", e);
                 } finally {
                     if (!startupComplete) {
                         throw new IllegalStateException("Startup of Socks5TestProxy failed within 5 seconds");
@@ -230,7 +233,7 @@ public class Socks5TestProxy {
                 }
                 catch (Exception e) {
                     try {
-                        e.printStackTrace();
+                        LOGGER.log(Level.SEVERE, "exception", e);
                         socket.close();
                     }
                     catch (IOException e1) {

smack-extensions/src/test/java/org/jivesoftware/util/Protocol.java

@@ -124,6 +124,7 @@ public class Protocol {
      */
     @SuppressWarnings("unchecked")
     public void verifyAll() {
+        // CHECKSTYLE:OFF
         assertEquals(requests.size(), responsesList.size());
 
         if (printProtocol)
@@ -154,6 +155,7 @@ public class Protocol {
         }
         if (printProtocol)
             System.out.println("=================== End =================\n");
+        // CHECKSTYLE:ON
     }
 
     /**

smack-im/src/main/java/org/jivesoftware/smack/chat/ChatManager.java

@@ -153,7 +153,9 @@ public class ChatManager extends Manager{
                 Message message = (Message) packet;
                 Chat chat;
                 if (message.getThread() == null) {
+                    // CHECKSTYLE:OFF
                 	chat = getUserChat(message.getFrom());
+                    // CHECKSTYLE:ON
                 }
                 else {
                     chat = getThreadChat(message.getThread());

smack-im/src/main/java/org/jivesoftware/smack/roster/rosterstore/DirectoryRosterStore.java

@@ -122,7 +122,7 @@ public class DirectoryRosterStore implements RosterStore {
         for (File file : fileDir.listFiles(rosterDirFilter)) {
             Item entry = readEntry(file);
             if (entry == null) {
-                log("Roster store file '" + file + "' is invalid.");
+                LOGGER.severe("Roster store file '" + file + "' is invalid.");
             }
             else {
                 entries.add(entry);
@@ -228,7 +228,7 @@ public class DirectoryRosterStore implements RosterStore {
                             groupNames.add(group);
                         }
                         else {
-                            log("Invalid group entry in store entry file "
+                            LOGGER.severe("Invalid group entry in store entry file "
                                     + file);
                         }
                     }
@@ -245,9 +245,7 @@ public class DirectoryRosterStore implements RosterStore {
             return null;
         }
         catch (XmlPullParserException e) {
-            log("Invalid group entry in store entry file "
+            LOGGER.log(Level.SEVERE, "Invalid group entry in store entry file", e);
-                    + file);
-            LOGGER.log(Level.SEVERE, "readEntry()", e);
             return null;
         }
 
@@ -264,14 +262,14 @@ public class DirectoryRosterStore implements RosterStore {
                 item.setItemType(RosterPacket.ItemType.valueOf(type));
             }
             catch (IllegalArgumentException e) {
-                log("Invalid type in store entry file " + file);
+                LOGGER.log(Level.SEVERE, "Invalid type in store entry file " + file, e);
                 return null;
             }
             if (status != null) {
                 RosterPacket.ItemStatus itemStatus = RosterPacket.ItemStatus
                         .fromString(status);
                 if (itemStatus == null) {
-                    log("Invalid status in store entry file " + file);
+                    LOGGER.severe("Invalid status in store entry file " + file);
                     return null;
                 }
                 item.setItemStatus(itemStatus);
@@ -304,8 +302,4 @@ public class DirectoryRosterStore implements RosterStore {
         String encodedJid = Base32.encode(bareJid.toString());
         return new File(fileDir, ENTRY_PREFIX + encodedJid);
     }
-
-    private void log(String error) {
-        System.err.println(error);
-    }
 }

smack-im/src/test/java/org/jivesoftware/smack/roster/RosterTest.java

@@ -31,7 +31,6 @@ import java.util.List;
 import java.util.concurrent.CopyOnWriteArrayList;
 
 import org.jivesoftware.smack.DummyConnection;
-import org.jivesoftware.smack.SmackConfiguration;
 import org.jivesoftware.smack.SmackException;
 import org.jivesoftware.smack.XMPPException;
 import org.jivesoftware.smack.im.InitSmackIm;
@@ -716,38 +715,20 @@ public class RosterTest extends InitSmackIm {
 
         public synchronized void entriesAdded(Collection<Jid> addresses) {
             addressesAdded.addAll(addresses);
-            if (SmackConfiguration.DEBUG) {
-                for (Jid address : addresses) {
-                    System.out.println("Roster entry for " + address + " added.");
-                }
-            }
             reportInvoked();
         }
 
         public synchronized void entriesDeleted(Collection<Jid> addresses) {
             addressesDeleted.addAll(addresses);
-            if (SmackConfiguration.DEBUG) {
-                for (Jid address : addresses) {
-                    System.out.println("Roster entry for " + address + " deleted.");
-                }
-            }
             reportInvoked();
         }
 
         public synchronized void entriesUpdated(Collection<Jid> addresses) {
             addressesUpdated.addAll(addresses);
-            if (SmackConfiguration.DEBUG) {
-                for (Jid address : addresses) {
-                    System.out.println("Roster entry for " + address + " updated.");
-                }
-            }
             reportInvoked();
         }
 
         public void presenceChanged(Presence presence) {
-            if (SmackConfiguration.DEBUG) {
-                System.out.println("Roster presence changed: " + presence.toXML());
-            }
             reportInvoked();
         }
 

smack-jingle-old/src/demo/java/org/jivesoftware/smackx/jingle/mediaimpl/demo/Demo.java

@@ -73,7 +73,7 @@ public class Demo extends JFrame {
             initialize();
         }
         catch (XMPPException e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
     }
 
@@ -100,7 +100,7 @@ public class Demo extends JFrame {
                     incoming.startIncoming();
                 }
                 catch (XMPPException e) {
-                    e.printStackTrace();
+                    LOGGER.log(Level.WARNING, "exception", e);
                 }
 
             }

smack-jingle-old/src/integration-test/java/org/jivesoftware/smackx/jingle/JingleManagerTest.java

@@ -233,7 +233,7 @@ public class JingleManagerTest extends SmackTestCase {
             assertTrue(valCounter() > 0);
 
         } catch (Exception e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
             fail("An error occured with Jingle");
         }
     }
@@ -278,7 +278,7 @@ public class JingleManagerTest extends SmackTestCase {
                         JingleSession session1 = request.accept();
                         session1.startIncoming();
                     } catch (Exception e) {
-                        e.printStackTrace();
+                        LOGGER.log(Level.WARNING, "exception", e);
                     }
                 }
             });
@@ -293,7 +293,7 @@ public class JingleManagerTest extends SmackTestCase {
             assertTrue(valCounter() > 0);
 
         } catch (Exception e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
             fail("An error occured with Jingle");
         }
     }
@@ -369,7 +369,7 @@ public class JingleManagerTest extends SmackTestCase {
 
                         session1.startIncoming();
                     } catch (Exception e) {
-                        e.printStackTrace();
+                        LOGGER.log(Level.WARNING, "exception", e);
                     }
                 }
             });
@@ -384,7 +384,7 @@ public class JingleManagerTest extends SmackTestCase {
             assertTrue(valCounter() == 1);
 
         } catch (Exception e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
             fail("An error occured with Jingle");
         }
     }
@@ -456,7 +456,7 @@ public class JingleManagerTest extends SmackTestCase {
 
                         session1.startIncoming();
                     } catch (Exception e) {
-                        e.printStackTrace();
+                        LOGGER.log(Level.WARNING, "exception", e);
                     }
                 }
             });
@@ -498,7 +498,7 @@ public class JingleManagerTest extends SmackTestCase {
             assertTrue(valCounter() == 2);
 
         } catch (Exception e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
             fail("An error occured with Jingle");
         }
     }
@@ -542,7 +542,7 @@ public class JingleManagerTest extends SmackTestCase {
                         session.startIncoming();
                         session.terminate();
                     } catch (XMPPException e) {
-                        e.printStackTrace();
+                        LOGGER.log(Level.WARNING, "exception", e);
                     }
 
                 }
@@ -588,7 +588,7 @@ public class JingleManagerTest extends SmackTestCase {
             assertTrue(valCounter() > 0);
 
         } catch (Exception e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
             fail("An error occured with Jingle");
         }
     }
@@ -625,7 +625,7 @@ public class JingleManagerTest extends SmackTestCase {
                             incCounter();
                         }
                     } catch (Exception e) {
-                        e.printStackTrace();
+                        LOGGER.log(Level.WARNING, "exception", e);
                     }
                 }
             }
@@ -666,11 +666,11 @@ public class JingleManagerTest extends SmackTestCase {
                 ds1.close();
 
             } catch (Exception e) {
-                e.printStackTrace();
+                LOGGER.log(Level.WARNING, "exception", e);
             }
 
         } catch (Exception e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
 
     }
@@ -737,7 +737,7 @@ public class JingleManagerTest extends SmackTestCase {
 
                     session.startIncoming();
                 } catch (XMPPException e) {
-                    e.printStackTrace();
+                    LOGGER.log(Level.WARNING, "exception", e);
                 }
 
             }
@@ -783,7 +783,7 @@ public class JingleManagerTest extends SmackTestCase {
                 Thread.sleep(3000);
 
             } catch (Exception e) {
-                e.printStackTrace();
+                LOGGER.log(Level.WARNING, "exception", e);
             }
 
         System.out.println(valCounter());
@@ -871,7 +871,7 @@ public class JingleManagerTest extends SmackTestCase {
 
                         session.startIncoming();
                     } catch (XMPPException e) {
-                        e.printStackTrace();
+                        LOGGER.log(Level.WARNING, "exception", e);
                     }
 
                 }
@@ -893,7 +893,7 @@ public class JingleManagerTest extends SmackTestCase {
             Thread.sleep(15000);
 
         } catch (Exception e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
 
     }
@@ -941,7 +941,7 @@ public class JingleManagerTest extends SmackTestCase {
 //
 //                        ses.startIncoming();
 //                    } catch (Exception e) {
-//                        e.printStackTrace();
+//                        LOGGER.log(Level.WARNING, "exception", e);
 //                    }
 //                }
 //            });
@@ -984,7 +984,7 @@ public class JingleManagerTest extends SmackTestCase {
 //            assertTrue(valCounter() > 0);
 //
 //        } catch (Exception e) {
-//            e.printStackTrace();
+//            LOGGER.log(Level.WARNING, "exception", e);
 //            fail("An error occured with Jingle");
 //        }
 //    }

smack-jingle-old/src/integration-test/java/org/jivesoftware/smackx/jingle/JingleMediaTest.java

@@ -96,7 +96,7 @@ public class JingleMediaTest extends SmackTestCase {
                             //                            });
 
                         } catch (XMPPException e) {
-                            e.printStackTrace();
+                            LOGGER.log(Level.WARNING, "exception", e);
                         }
 
                     }
@@ -122,7 +122,7 @@ public class JingleMediaTest extends SmackTestCase {
                 Thread.sleep(60000);
 
             } catch (Exception e) {
-                e.printStackTrace();
+                LOGGER.log(Level.WARNING, "exception", e);
             }
 
     }
@@ -165,11 +165,11 @@ public class JingleMediaTest extends SmackTestCase {
                         try {
                             Thread.sleep(12000);
                         } catch (InterruptedException e) {
-                            e.printStackTrace();
+                            LOGGER.log(Level.WARNING, "exception", e);
                         }
                         session.startIncoming();
                     } catch (XMPPException e) {
-                        e.printStackTrace();
+                        LOGGER.log(Level.WARNING, "exception", e);
                     }
 
                 }
@@ -203,7 +203,7 @@ public class JingleMediaTest extends SmackTestCase {
             }
 
         } catch (Exception e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
 
     }
@@ -238,7 +238,7 @@ public class JingleMediaTest extends SmackTestCase {
 
                         session.startIncoming();
                     } catch (XMPPException e) {
-                        e.printStackTrace();
+                        LOGGER.log(Level.WARNING, "exception", e);
                     }
 
                 }
@@ -257,7 +257,7 @@ public class JingleMediaTest extends SmackTestCase {
             x1.disconnect();
 
         } catch (Exception e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
 
     }
@@ -293,7 +293,7 @@ public class JingleMediaTest extends SmackTestCase {
 
                         session.startIncoming();
                     } catch (XMPPException e) {
-                        e.printStackTrace();
+                        LOGGER.log(Level.WARNING, "exception", e);
                     }
 
                 }
@@ -312,7 +312,7 @@ public class JingleMediaTest extends SmackTestCase {
             x1.disconnect();
 
         } catch (Exception e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
 
     }
@@ -355,7 +355,7 @@ public class JingleMediaTest extends SmackTestCase {
 
                                     session.startIncoming();
                                 } catch (XMPPException e) {
-                                    e.printStackTrace();
+                                    LOGGER.log(Level.WARNING, "exception", e);
                                 }
 
                             }
@@ -381,7 +381,7 @@ public class JingleMediaTest extends SmackTestCase {
                         x1.disconnect();
 
                     } catch (Exception e) {
-                        e.printStackTrace();
+                        LOGGER.log(Level.WARNING, "exception", e);
                     }
                 }
             });
@@ -392,7 +392,7 @@ public class JingleMediaTest extends SmackTestCase {
         try {
             Thread.sleep(250000);
         } catch (InterruptedException e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
     }
 
@@ -429,7 +429,7 @@ public class JingleMediaTest extends SmackTestCase {
 
                         session.startIncoming();
                     } catch (XMPPException e) {
-                        e.printStackTrace();
+                        LOGGER.log(Level.WARNING, "exception", e);
                     }
 
                 }
@@ -459,7 +459,7 @@ public class JingleMediaTest extends SmackTestCase {
             x1.disconnect();
 
         } catch (Exception e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
 
     }
@@ -480,7 +480,7 @@ public class JingleMediaTest extends SmackTestCase {
                 try {
                     Thread.sleep(10000);
                 } catch (InterruptedException e) {
-                    e.printStackTrace();
+                    LOGGER.log(Level.WARNING, "exception", e);
                 }
 
                 audioChannel0.stop();
@@ -489,10 +489,10 @@ public class JingleMediaTest extends SmackTestCase {
                 try {
                     Thread.sleep(3000);
                 } catch (InterruptedException e) {
-                    e.printStackTrace();
+                    LOGGER.log(Level.WARNING, "exception", e);
                 }
             } catch (Exception e) {
-                e.printStackTrace();
+                LOGGER.log(Level.WARNING, "exception", e);
             }
         }
     }
@@ -515,7 +515,7 @@ public class JingleMediaTest extends SmackTestCase {
                 try {
                     Thread.sleep(10000);
                 } catch (InterruptedException e) {
-                    e.printStackTrace();
+                    LOGGER.log(Level.WARNING, "exception", e);
                 }
 
                 audioChannel0.stop();
@@ -524,11 +524,11 @@ public class JingleMediaTest extends SmackTestCase {
                 try {
                     Thread.sleep(3000);
                 } catch (InterruptedException e) {
-                    e.printStackTrace();
+                    LOGGER.log(Level.WARNING, "exception", e);
                 }
             }
         } catch (Exception e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
     }
 

smack-jingle-old/src/integration-test/java/org/jivesoftware/smackx/jingle/nat/BridgedResolverTest.java

@@ -106,7 +106,7 @@ public class BridgedResolverTest extends SmackTestCase {
             Thread.sleep(1000);
         }
         catch (InterruptedException e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
 
         assertTrue(valCounter() == 1);

smack-jingle-old/src/integration-test/java/org/jivesoftware/smackx/jingle/nat/STUNResolverTest.java

@@ -175,9 +175,9 @@ public class STUNResolverTest extends SmackTestCase {
                     System.out.println("C: " + candidate.getAddress().getInetAddress() + "|"
                             + candidate.getBase().getAddress().getInetAddress() + " p:" + candidate.getPriority());
                 } catch (UtilityException e) {
-                    e.printStackTrace();
+                    LOGGER.log(Level.WARNING, "exception", e);
                 } catch (UnknownHostException e) {
-                    e.printStackTrace();
+                    LOGGER.log(Level.WARNING, "exception", e);
                 }
             }
             Candidate candidate = cc.getSortedCandidates().get(0);
@@ -251,7 +251,7 @@ public class STUNResolverTest extends SmackTestCase {
             Thread.sleep(55000);
             assertTrue(valCounter() > 0);
         } catch (Exception e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
     }
 
@@ -353,7 +353,7 @@ public class STUNResolverTest extends SmackTestCase {
                         });
                         session1.startIncoming();
                     } catch (XMPPException e) {
-                        e.printStackTrace();
+                        LOGGER.log(Level.WARNING, "exception", e);
                     }
                 }
             });
@@ -395,7 +395,7 @@ public class STUNResolverTest extends SmackTestCase {
             assertTrue(valCounter() == 2);
 
         } catch (Exception e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
             fail("An error occured with Jingle");
         }
     }

smack-jingle-old/src/integration-test/java/org/jivesoftware/smackx/jingle/nat/TransportResolverTest.java

@@ -52,7 +52,7 @@ public class TransportResolverTest extends SmackTestCase {
 		try {
 			tr.resolve(null);
 		} catch (XMPPException e) {
-			e.printStackTrace();
+			LOGGER.log(Level.WARNING, "exception", e);
 			fail("Error resolving");
 		}
 	}

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/JingleManager.java

@@ -19,6 +19,7 @@ package org.jivesoftware.smackx.jingleold;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
+import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.jivesoftware.smack.ConnectionCreationListener;
@@ -125,7 +126,7 @@ import org.jxmpp.jid.Jid;
  *                                                       // Start the call
  *                                                       session.start();
  *                                                   } catch (XMPPException e) {
- *                                                       e.printStackTrace();
+ *                                                       LOGGER.log(Level.WARNING, "exception", e);
  *                                                   }
  * <p/>
  *                                               }
@@ -134,7 +135,7 @@ import org.jxmpp.jid.Jid;
  *                                       Thread.sleep(15000);
  * <p/>
  *                                       } catch (Exception e) {
- *                                           e.printStackTrace();
+ *                                           LOGGER.log(Level.WARNING, "exception", e);
  *                                       }
  * <p/>
  *                               To create an Outgoing Jingle Session:
@@ -168,7 +169,7 @@ import org.jxmpp.jid.Jid;
  *                                           Thread.sleep(3000);
  * <p/>
  *                                       } catch (Exception e) {
- *                                           e.printStackTrace();
+ *                                           LOGGER.log(Level.WARNING, "exception", e);
  *                                       }
  *                               </pre>
  *
@@ -239,7 +240,7 @@ public class JingleManager implements JingleSessionListener {
                         try {
                             aux.terminate();
                         } catch (Exception e) {
-                            e.printStackTrace();
+                            LOGGER.log(Level.WARNING, "exception", e);
                         }
                 }
             }
@@ -404,7 +405,7 @@ public class JingleManager implements JingleSessionListener {
             try {
                 createdJingleSessionListener.sessionCreated(jingleSession);
             } catch (Exception e) {
-                e.printStackTrace();
+                LOGGER.log(Level.WARNING, "exception", e);
             }
         }
     }
@@ -482,7 +483,7 @@ public class JingleManager implements JingleSessionListener {
             try {
                 jingleSession.terminate();
             } catch (Exception e) {
-                e.printStackTrace();
+                LOGGER.log(Level.WARNING, "exception", e);
             }
 
         sessions.clear();

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/JingleNegotiator.java

@@ -236,7 +236,7 @@ public abstract class JingleNegotiator {
      */
     public abstract List<IQ> dispatchIncomingPacket(IQ iq, String id) throws XMPPException, SmackException, InterruptedException;
 
-
+    // CHECKSTYLE:OFF
     public void start() {
     	isStarted = true;
     	doStart();
@@ -245,6 +245,7 @@ public abstract class JingleNegotiator {
     public boolean isStarted() {
     	return isStarted;
     }
+    // CHECKSTYLE:ON
 
     /**
      * Each of the negotiators has their individual behavior when they start.

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/JingleSession.java

@@ -21,6 +21,7 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Random;
+import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.jivesoftware.smack.AbstractConnectionClosedListener;
@@ -296,7 +297,7 @@ public class JingleSession extends JingleNegotiator implements MediaReceivedList
 
                 // Send the IQ to each of the content negotiators for further processing.
                 // Each content negotiator may pass back a list of JingleContent for addition to the response packet.
-
+                // CHECKSTYLE:OFF
                 for (ContentNegotiator contentNegotiator : contentNegotiators) {
                 	// If at this point the content negotiator isn't started, it's because we sent a session-init jingle
                 	// packet from startOutgoing() and we're waiting for the other side to let us know they're ready
@@ -307,6 +308,7 @@ public class JingleSession extends JingleNegotiator implements MediaReceivedList
                 	}
                     responses.addAll(contentNegotiator.dispatchIncomingPacket(iq, responseId));
                 }
+                // CHECKSTYLE:ON
 
             }
             // Acknowledge the IQ reception
@@ -471,8 +473,10 @@ public class JingleSession extends JingleNegotiator implements MediaReceivedList
             }
 
             // The the packet.
+            // CHECKSTYLE:OFF
             if ((getConnection() != null) && (getConnection().isConnected()))
             	getConnection().sendStanza(jout);
+            // CHECKSTYLE:ON
         }
         return jout;
     }
@@ -644,11 +648,13 @@ public class JingleSession extends JingleNegotiator implements MediaReceivedList
     }
 
     private void removeConnectionListener() {
+        // CHECKSTYLE:OFF
     	if (connectionListener != null) {
     		getConnection().removeConnectionListener(connectionListener);
 
     		LOGGER.fine("JINGLE SESSION: REMOVE CONNECTION LISTENER");
     	}
+        // CHECKSTYLE:ON
     }
 
     /**
@@ -676,7 +682,7 @@ public class JingleSession extends JingleNegotiator implements MediaReceivedList
                 try {
                     receivePacketAndRespond((IQ) packet);
                 } catch (Exception e) {
-                    e.printStackTrace();
+                    LOGGER.log(Level.WARNING, "exception", e);
                 }
             }
         };
@@ -823,11 +829,12 @@ public class JingleSession extends JingleNegotiator implements MediaReceivedList
 
             public void transportEstablished(TransportCandidate local, TransportCandidate remote) throws NotConnectedException, InterruptedException {
                 if (isFullyEstablished()) {
-
+                // CHECKSTYLE:OFF
                 	// Indicate that this session is active.
                 	setSessionState(JingleSessionStateActive.getInstance());
 
                 	for (ContentNegotiator contentNegotiator : contentNegotiators) {
+                // CHECKSTYLE:ON
                         if (contentNegotiator.getNegotiatorState() == JingleNegotiatorState.SUCCEEDED)
                             contentNegotiator.triggerContentEstablished();
                     }
@@ -1081,7 +1088,7 @@ public class JingleSession extends JingleNegotiator implements MediaReceivedList
             try {
                 resolver = transportManager.getResolver(this);
             } catch (XMPPException e) {
-                e.printStackTrace();
+                LOGGER.log(Level.WARNING, "exception", e);
             }
 
             if (resolver.getType().equals(TransportResolver.Type.rawupd)) {

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/JingleSessionStateActive.java

@@ -16,6 +16,9 @@
  */
 package org.jivesoftware.smackx.jingleold;
 
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
 import org.jivesoftware.smack.packet.IQ;
 import org.jivesoftware.smackx.jingleold.packet.Jingle;
 import org.jivesoftware.smackx.jingleold.packet.JingleError;
@@ -25,6 +28,8 @@ import org.jivesoftware.smackx.jingleold.packet.JingleError;
  *  @see JingleSessionState
  */
 public class JingleSessionStateActive extends JingleSessionState {
+    private static final Logger LOGGER = Logger.getLogger(JingleSessionStateActive.class.getName());
+
     private static JingleSessionStateActive INSTANCE = null;
 
     protected JingleSessionStateActive() {
@@ -98,7 +103,7 @@ public class JingleSessionStateActive extends JingleSessionState {
         try {
             session.terminate("Closed remotely");
         } catch (Exception e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
 
         return response;

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/JingleSessionStatePending.java

@@ -16,6 +16,9 @@
  */
 package org.jivesoftware.smackx.jingleold;
 
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
 import org.jivesoftware.smack.packet.IQ;
 import org.jivesoftware.smackx.jingleold.packet.Jingle;
 
@@ -25,6 +28,8 @@ import org.jivesoftware.smackx.jingleold.packet.Jingle;
  */
 
 public class JingleSessionStatePending extends JingleSessionState {
+    private static final Logger LOGGER = Logger.getLogger(JingleSessionStatePending.class.getName());
+
     private static JingleSessionStatePending INSTANCE = null;
 
     protected JingleSessionStatePending() {
@@ -124,7 +129,7 @@ public class JingleSessionStatePending extends JingleSessionState {
         try {
             session.terminate("Closed remotely");
         } catch (Exception e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
 
         return response;

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/JingleSessionStateUnknown.java

@@ -16,6 +16,9 @@
  */
 package org.jivesoftware.smackx.jingleold;
 
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
 import org.jivesoftware.smack.SmackException;
 import org.jivesoftware.smack.XMPPException;
 import org.jivesoftware.smack.packet.IQ;
@@ -36,6 +39,8 @@ import org.jivesoftware.smackx.jingleold.packet.JingleTransport;
  *  @see JingleSessionState
  */
 public class JingleSessionStateUnknown extends JingleSessionState {
+    private static final Logger LOGGER = Logger.getLogger(JingleSessionStateUnknown.class.getName());
+
     private static JingleSessionStateUnknown INSTANCE = null;
 
     protected JingleSessionStateUnknown() {
@@ -171,7 +176,7 @@ public class JingleSessionStateUnknown extends JingleSessionState {
                         try {
                             resolver = transportManager.getResolver(session);
                         } catch (XMPPException e) {
-                            e.printStackTrace();
+                            LOGGER.log(Level.WARNING, "exception", e);
                         }
 
                         if (resolver.getType().equals(TransportResolver.Type.rawupd)) {
@@ -205,7 +210,7 @@ public class JingleSessionStateUnknown extends JingleSessionState {
         try {
             session.terminate("Closed remotely");
         } catch (Exception e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
 
         return response;

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/mediaimpl/jmf/AudioChannel.java

@@ -21,6 +21,7 @@ import java.net.InetAddress;
 import java.net.UnknownHostException;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import javax.media.Codec;
@@ -173,7 +174,7 @@ public class AudioChannel {
                 }
             }
             catch (Exception e) {
-                e.printStackTrace();
+                LOGGER.log(Level.WARNING, "exception", e);
             }
         }
     }
@@ -202,11 +203,11 @@ public class AudioChannel {
             processor = javax.media.Manager.createProcessor(ds);
         }
         catch (NoProcessorException npe) {
-            npe.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", npe);
             return "Couldn't create processor";
         }
         catch (IOException ioe) {
-            ioe.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", ioe);
             return "IOException creating processor";
         }
 
@@ -277,7 +278,7 @@ public class AudioChannel {
                                     tracks[i].setCodecChain(codec);
                                 }
                                 catch (UnsupportedPlugInException e) {
-                                    e.printStackTrace();
+                                    LOGGER.log(Level.WARNING, "exception", e);
                                 }
                             }
 
@@ -394,7 +395,7 @@ public class AudioChannel {
 
             }
             catch (Exception e) {
-                e.printStackTrace();
+                LOGGER.log(Level.WARNING, "exception", e);
                 return e.getMessage();
             }
         }
@@ -421,7 +422,7 @@ public class AudioChannel {
                 }
             }
             catch (IOException e) {
-                e.printStackTrace();
+                LOGGER.log(Level.WARNING, "exception", e);
             }
 
         }
@@ -514,7 +515,7 @@ public class AudioChannel {
                 Thread.sleep(5000);
             }
             catch (InterruptedException e) {
-                e.printStackTrace();
+                LOGGER.log(Level.WARNING, "exception", e);
             }
 
             audioChannel0.setTrasmit(false);
@@ -524,7 +525,7 @@ public class AudioChannel {
                 Thread.sleep(5000);
             }
             catch (InterruptedException e) {
-                e.printStackTrace();
+                LOGGER.log(Level.WARNING, "exception", e);
             }
 
             audioChannel0.setTrasmit(true);
@@ -534,7 +535,7 @@ public class AudioChannel {
                 Thread.sleep(5000);
             }
             catch (InterruptedException e) {
-                e.printStackTrace();
+                LOGGER.log(Level.WARNING, "exception", e);
             }
 
             audioChannel0.stop();
@@ -542,7 +543,7 @@ public class AudioChannel {
 
         }
         catch (UnknownHostException e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
 
     }

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/mediaimpl/jmf/AudioMediaSession.java

@@ -18,6 +18,7 @@ package org.jivesoftware.smackx.jingleold.mediaimpl.jmf;
 
 import java.io.IOException;
 import java.net.ServerSocket;
+import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import javax.media.MediaLocator;
@@ -144,7 +145,7 @@ public class AudioMediaSession extends JingleMediaSession {
                 return freePort;
             }
             catch (IOException e) {
-                e.printStackTrace();
+                LOGGER.log(Level.WARNING, "exception", e);
             }
         }
         try {
@@ -153,7 +154,7 @@ public class AudioMediaSession extends JingleMediaSession {
             ss.close();
         }
         catch (IOException e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
         return freePort;
     }

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/mediaimpl/jmf/JmfMediaManager.java

@@ -20,6 +20,7 @@ import java.io.File;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.jivesoftware.smackx.jingleold.JingleSession;
@@ -141,8 +142,7 @@ public class JmfMediaManager extends JingleMediaManager {
                 jmfProperties.createNewFile();
             }
             catch (IOException ex) {
-                LOGGER.fine("Failed to create jmf.properties");
+                LOGGER.log(Level.FINE, "Failed to create jmf.properties", ex);
-                ex.printStackTrace();
             }
         }
 

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/mediaimpl/jspeex/AudioMediaSession.java

@@ -21,6 +21,7 @@ import java.net.DatagramSocket;
 import java.net.InetAddress;
 import java.net.ServerSocket;
 import java.security.GeneralSecurityException;
+import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import javax.media.NoProcessorException;
@@ -138,16 +139,16 @@ public class AudioMediaSession extends JingleMediaSession implements MediaSessio
             mediaSession = createSession(localIp, localPort, ip, remotePort, this, 2, false, true);
         }
         catch (NoProcessorException e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
         catch (UnsupportedFormatException e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
         catch (IOException e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
         catch (GeneralSecurityException e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
     }
 
@@ -161,7 +162,7 @@ public class AudioMediaSession extends JingleMediaSession implements MediaSessio
             this.mediaReceived("");
         }
         catch (IOException e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
     }
 
@@ -225,7 +226,7 @@ public class AudioMediaSession extends JingleMediaSession implements MediaSessio
                 return freePort;
             }
             catch (IOException e) {
-                e.printStackTrace();
+                LOGGER.log(Level.WARNING, "exception", e);
             }
         }
         try {
@@ -234,7 +235,7 @@ public class AudioMediaSession extends JingleMediaSession implements MediaSessio
             ss.close();
         }
         catch (IOException e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
         return freePort;
     }

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/mediaimpl/jspeex/SpeexMediaManager.java

@@ -20,6 +20,7 @@ import java.io.File;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.jivesoftware.smackx.jingleold.JingleSession;
@@ -106,8 +107,7 @@ public class SpeexMediaManager extends JingleMediaManager {
                 jmfProperties.createNewFile();
             }
             catch (IOException ex) {
-                LOGGER.fine("Failed to create jmf.properties");
+                LOGGER.log(Level.FINE, "Failed to create jmf.properties", ex);
-                ex.printStackTrace();
             }
         }
 

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/mediaimpl/sshare/ScreenShareSession.java

@@ -24,6 +24,7 @@ import java.net.DatagramSocket;
 import java.net.InetAddress;
 import java.net.ServerSocket;
 import java.net.UnknownHostException;
+import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import javax.swing.JFrame;
@@ -83,7 +84,7 @@ public class ScreenShareSession extends JingleMediaSession {
                 transmitter = new ImageTransmitter(new DatagramSocket(getLocal().getPort()), remote, getRemote().getPort(),
                         new Rectangle(0, 0, width, height));
             } catch (Exception e) {
-                e.printStackTrace();
+                LOGGER.log(Level.WARNING, "exception", e);
             }
 
         } else {
@@ -106,7 +107,7 @@ public class ScreenShareSession extends JingleMediaSession {
                         height);
                 LOGGER.fine("Receiving on:" + receiver.getLocalPort());
             } catch (UnknownHostException e) {
-                e.printStackTrace();
+                LOGGER.log(Level.WARNING, "exception", e);
             }
 
             jp.add(receiver);
@@ -176,7 +177,7 @@ public class ScreenShareSession extends JingleMediaSession {
                 ss.close();
                 return freePort;
             } catch (IOException e) {
-                e.printStackTrace();
+                LOGGER.log(Level.WARNING, "exception", e);
             }
         }
         try {
@@ -184,7 +185,7 @@ public class ScreenShareSession extends JingleMediaSession {
             freePort = ss.getLocalPort();
             ss.close();
         } catch (IOException e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
         return freePort;
     }

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/mediaimpl/sshare/api/DefaultEncoder.java

@@ -17,14 +17,18 @@
 package org.jivesoftware.smackx.jingleold.mediaimpl.sshare.api;
 
 import javax.imageio.ImageIO;
+
 import java.awt.image.BufferedImage;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 
 /**
  * Implements a default PNG Encoder
  */
 public class DefaultEncoder implements ImageEncoder{
+    private static final Logger LOGGER = Logger.getLogger(DefaultEncoder.class.getName());
 
     public ByteArrayOutputStream encode(BufferedImage bufferedImage) {
         ByteArrayOutputStream baos = new ByteArrayOutputStream();
@@ -32,7 +36,7 @@ public class DefaultEncoder implements ImageEncoder{
             ImageIO.write(bufferedImage, "png", baos);
         }
         catch (IOException e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
             baos = null;
         }
         return baos;

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/mediaimpl/sshare/api/ImageReceiver.java

@@ -25,6 +25,8 @@ import java.net.DatagramPacket;
 import java.net.DatagramSocket;
 import java.net.InetAddress;
 import java.net.SocketException;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 
 /**
  * UDP Image Receiver.
@@ -33,6 +35,7 @@ import java.net.SocketException;
  * @author Thiago Rocha Camargo
  */
 public class ImageReceiver extends Canvas {
+    private static final Logger LOGGER = Logger.getLogger(ImageReceiver.class.getName());
 
 	private static final long serialVersionUID = -7000112305305269025L;
 	private boolean on = true;
@@ -81,7 +84,7 @@ public class ImageReceiver extends Canvas {
                         }
                     }
                     catch (IOException e) {
-                        e.printStackTrace();
+                        LOGGER.log(Level.WARNING, "exception", e);
                     }
                 }
             }).start();
@@ -101,20 +104,20 @@ public class ImageReceiver extends Canvas {
                                 Thread.sleep(1000);
                             }
                             catch (InterruptedException e) {
-                                e.printStackTrace();
+                                LOGGER.log(Level.WARNING, "exception", e);
                             }
 
                         }
                     }
                     catch (IOException e) {
-                        e.printStackTrace();
+                        LOGGER.log(Level.WARNING, "exception", e);
                     }
                 }
             }).start();
 
         }
         catch (SocketException e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
         this.setSize(width, height);
     }

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/mediaimpl/sshare/api/ImageTransmitter.java

@@ -27,6 +27,7 @@ import java.net.DatagramPacket;
 import java.net.DatagramSocket;
 import java.net.InetAddress;
 import java.util.Arrays;
+import java.util.logging.Level;
 import java.util.logging.Logger;
 
 /**
@@ -77,7 +78,7 @@ public class ImageTransmitter implements Runnable {
 
         }
         catch (AWTException e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
 
     }
@@ -141,7 +142,7 @@ public class ImageTransmitter implements Runnable {
                                                 socket.send(p);
                                             }
                                             catch (IOException e) {
-                                                e.printStackTrace();
+                                                LOGGER.log(Level.WARNING, "exception", e);
                                             }
 
                                             tiles[i][j] = pixels;
@@ -157,7 +158,7 @@ public class ImageTransmitter implements Runnable {
                             }
                         }
                         catch (InterruptedException e) {
-                            e.printStackTrace();
+                            LOGGER.log(Level.WARNING, "exception", e);
                         }
                     }
                 }
@@ -170,7 +171,7 @@ public class ImageTransmitter implements Runnable {
                         Thread.sleep(500 - trace);
                     }
                     catch (InterruptedException e) {
-                        e.printStackTrace();
+                        LOGGER.log(Level.WARNING, "exception", e);
                     }
                 }
             }

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/nat/BasicResolver.java

@@ -24,6 +24,8 @@ import java.net.InetAddress;
 import java.net.NetworkInterface;
 import java.net.SocketException;
 import java.util.Enumeration;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 
 /**
  * Basic Resolver takes all IP addresses of the interfaces and uses the
@@ -31,6 +33,7 @@ import java.util.Enumeration;
  * A very simple and easy to use resolver.
  */
 public class BasicResolver extends TransportResolver {
+    private static final Logger LOGGER = Logger.getLogger(BasicResolver.class.getName());
 
     /**
      * Constructor.
@@ -58,7 +61,7 @@ public class BasicResolver extends TransportResolver {
         try {
             ifaces = NetworkInterface.getNetworkInterfaces();
         } catch (SocketException e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
 
         while (ifaces.hasMoreElements()) {
@@ -81,7 +84,7 @@ public class BasicResolver extends TransportResolver {
         try {
             ifaces = NetworkInterface.getNetworkInterfaces();
         } catch (SocketException e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
 
         while (ifaces.hasMoreElements()) {
@@ -106,7 +109,7 @@ public class BasicResolver extends TransportResolver {
             tr.setLocalIp(InetAddress.getLocalHost().getHostAddress() != null ? InetAddress.getLocalHost().getHostAddress() : InetAddress.getLocalHost().getHostName());
             addCandidate(tr);
         } catch (Exception e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
         setResolveEnd();
 

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/nat/BridgedResolver.java

@@ -29,6 +29,8 @@ import java.net.NetworkInterface;
 import java.net.SocketException;
 import java.util.Enumeration;
 import java.util.Random;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 
 /**
  * Bridged Resolver use a RTPBridge Service to add a relayed candidate.
@@ -39,6 +41,7 @@ import java.util.Random;
  * The resolver adds this candidate
  */
 public class BridgedResolver extends TransportResolver {
+    private static final Logger LOGGER = Logger.getLogger(BridgedResolver.class.getName());
 
     XMPPConnection connection;
 
@@ -122,7 +125,7 @@ public class BridgedResolver extends TransportResolver {
             ifaces = NetworkInterface.getNetworkInterfaces();
         }
         catch (SocketException e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
 
         while (ifaces.hasMoreElements()) {
@@ -142,7 +145,7 @@ public class BridgedResolver extends TransportResolver {
             return InetAddress.getLocalHost().getHostAddress();
         }
         catch (Exception e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
 
         return "127.0.0.1";

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/nat/HttpServer.java

@@ -93,7 +93,7 @@ public class HttpServer {
                 processRequest();
             }
             catch (Exception e) {
-                e.printStackTrace();
+                LOGGER.log(Level.WARNING, "exception", e);
             }
         }
 
@@ -139,7 +139,7 @@ public class HttpServer {
             }
             catch (Exception e) {
                 // Do Nothing
-                e.printStackTrace();
+                LOGGER.log(Level.WARNING, "exception", e);
             }
         }
     }

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/nat/ICECandidate.java

@@ -19,6 +19,7 @@ package org.jivesoftware.smackx.jingleold.nat;
 import java.net.InetAddress;
 import java.net.UnknownHostException;
 import java.util.List;
+import java.util.logging.Level;
 import java.util.logging.Logger;
 
 /**
@@ -258,7 +259,7 @@ public class ICECandidate extends TransportCandidate implements Comparable<ICECa
                                     echo.testASync(checkingCandidate, getPassword());
                                 }
                                 catch (UnknownHostException e) {
-                                    e.printStackTrace();
+                                    LOGGER.log(Level.WARNING, "exception", e);
                                 }
                             }
                         }
@@ -271,7 +272,7 @@ public class ICECandidate extends TransportCandidate implements Comparable<ICECa
                         Thread.sleep(400);
                     }
                     catch (InterruptedException e) {
-                        e.printStackTrace();
+                        LOGGER.log(Level.WARNING, "exception", e);
                     }
 
                 for (TransportCandidate candidate : localCandidates) {

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/nat/ICEResolver.java

@@ -24,6 +24,7 @@ import java.util.Enumeration;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Random;
+import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.jivesoftware.smack.SmackException;
@@ -71,6 +72,7 @@ public class ICEResolver extends TransportResolver {
             // we now cache established/initialized negotiators for each STUN server, so that subsequent uses
             // of the STUN server are much, much faster.
             if (negociatorsMap.get(server) == null) {
+            // CHECKSTYLE:OFF
             	ICENegociator iceNegociator = new ICENegociator(server, port, (short) 1);
             	negociatorsMap.put(server, iceNegociator);
 
@@ -78,6 +80,7 @@ public class ICEResolver extends TransportResolver {
             	iceNegociator.gatherCandidateAddresses();
             	// priorize candidates
             	iceNegociator.prioritizeCandidates();
+            // CHECKSTYLE:ON
             }
 
         }
@@ -135,7 +138,7 @@ public class ICEResolver extends TransportResolver {
 						i++;
 					}
 				} catch (SocketException e1) {
-					e1.printStackTrace();
+					LOGGER.log(Level.WARNING, "exeption", e1);
 				}
 
                 TransportCandidate transportCandidate = new ICECandidate(candidate.getAddress().getInetAddress().getHostAddress(), 1, nicNum, String.valueOf(Math.abs(random.nextLong())), candidate.getPort(), "1", candidate.getPriority(), iceType);
@@ -145,7 +148,7 @@ public class ICEResolver extends TransportResolver {
                     transportCandidate.addCandidateEcho(session);
                 }
                 catch (SocketException e) {
-                    e.printStackTrace();
+                    LOGGER.log(Level.WARNING, "exception", e);
                 }
                 this.addCandidate(transportCandidate);
 
@@ -153,10 +156,10 @@ public class ICEResolver extends TransportResolver {
 
             }
             catch (UtilityException e) {
-                e.printStackTrace();
+                LOGGER.log(Level.WARNING, "exception", e);
             }
             catch (UnknownHostException e) {
-                e.printStackTrace();
+                LOGGER.log(Level.WARNING, "exception", e);
             }
 
         // Get a Relay Candidate from XMPP Server
@@ -207,10 +210,10 @@ public class ICEResolver extends TransportResolver {
 
 //            }
 //            catch (UtilityException e) {
-//                e.printStackTrace();
+//                LOGGER.log(Level.WARNING, "exception", e);
 //            }
 //            catch (UnknownHostException e) {
-//                e.printStackTrace();
+//                LOGGER.log(Level.WARNING, "exception", e);
 //            }
 
             // Get Public Candidate From XMPP Server
@@ -229,7 +232,7 @@ public class ICEResolver extends TransportResolver {
                         ifaces = NetworkInterface.getNetworkInterfaces();
                     }
                     catch (SocketException e) {
-                        e.printStackTrace();
+                        LOGGER.log(Level.WARNING, "exception", e);
                     }
 
                     // If detect this address in local machine, don't use it.
@@ -260,13 +263,13 @@ public class ICEResolver extends TransportResolver {
                                 publicCandidate.addCandidateEcho(session);
                             }
                             catch (SocketException e) {
-                                e.printStackTrace();
+                                LOGGER.log(Level.WARNING, "exception", e);
                             }
 
                             addCandidate(publicCandidate);
                         }
                         catch (UnknownHostException e) {
-                            e.printStackTrace();
+                            LOGGER.log(Level.WARNING, "exception", e);
                         }
                     }
                 }

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/nat/ICETransportManager.java

@@ -16,6 +16,9 @@
  */
 package org.jivesoftware.smackx.jingleold.nat;
 
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
 import org.jivesoftware.smack.SmackException;
 import org.jivesoftware.smack.SmackException.NotConnectedException;
 import org.jivesoftware.smack.XMPPConnection;
@@ -26,6 +29,7 @@ import org.jivesoftware.smackx.jingleold.listeners.JingleSessionListener;
 import org.jivesoftware.smackx.jingleold.media.PayloadType;
 
 public class ICETransportManager extends JingleTransportManager implements JingleSessionListener, CreatedJingleSessionListener {
+    private static final Logger LOGGER = Logger.getLogger(ICETransportManager.class.getName());
 
     ICEResolver iceResolver = null;
 
@@ -35,7 +39,7 @@ public class ICETransportManager extends JingleTransportManager implements Jingl
             iceResolver.initializeAndWait();
         }
         catch (Exception e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
     }
 
@@ -44,7 +48,7 @@ public class ICETransportManager extends JingleTransportManager implements Jingl
             iceResolver.resolve(session);
         }
         catch (XMPPException e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
         return iceResolver;
     }

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/nat/RTPBridge.java

@@ -22,6 +22,7 @@ import java.net.InetAddress;
 import java.net.NetworkInterface;
 import java.net.SocketException;
 import java.util.Enumeration;
+import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.jivesoftware.smack.SmackException;
@@ -522,7 +523,7 @@ public class RTPBridge extends IQ {
             ifaces = NetworkInterface.getNetworkInterfaces();
         }
         catch (SocketException e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
         while (ifaces!=null&&ifaces.hasMoreElements()) {
 

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/nat/STUNTransportManager.java

@@ -16,6 +16,9 @@
  */
 package org.jivesoftware.smackx.jingleold.nat;
 
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
 import org.jivesoftware.smackx.jingleold.JingleSession;
 
 /**
@@ -24,6 +27,8 @@ import org.jivesoftware.smackx.jingleold.JingleSession;
  * @author Thiago Camargo
  */
 public class STUNTransportManager extends JingleTransportManager {
+    private static final Logger LOGGER = Logger.getLogger(STUNTransportManager.class.getName());
+
     STUNResolver stunResolver = null;
 
     public STUNTransportManager() {
@@ -32,7 +37,7 @@ public class STUNTransportManager extends JingleTransportManager {
         try {
             stunResolver.initializeAndWait();
         } catch (Exception e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
     }
 
@@ -40,7 +45,7 @@ public class STUNTransportManager extends JingleTransportManager {
         try {
             stunResolver.resolve(session);
         } catch (Exception e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
         return stunResolver;
     }

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/nat/TcpUdpBridgeClient.java

@@ -23,6 +23,7 @@ import java.net.DatagramPacket;
 import java.net.DatagramSocket;
 import java.net.InetAddress;
 import java.net.Socket;
+import java.util.logging.Level;
 import java.util.logging.Logger;
 
 /**
@@ -56,7 +57,7 @@ public class TcpUdpBridgeClient {
             LOGGER.fine("UDP: " + localUdpSocket.getLocalPort());
         }
         catch (IOException e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
         startBridge();
     }
@@ -88,7 +89,7 @@ public class TcpUdpBridgeClient {
 
                 }
                 catch (IOException e) {
-                    e.printStackTrace();
+                    LOGGER.log(Level.WARNING, "exception", e);
                 }
             }
 
@@ -122,7 +123,7 @@ public class TcpUdpBridgeClient {
 
                 }
                 catch (IOException e) {
-                    e.printStackTrace();
+                    LOGGER.log(Level.WARNING, "exception", e);
                 }
             }
 

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/nat/TcpUdpBridgeServer.java

@@ -25,6 +25,7 @@ import java.net.DatagramSocket;
 import java.net.InetAddress;
 import java.net.ServerSocket;
 import java.net.Socket;
+import java.util.logging.Level;
 import java.util.logging.Logger;
 
 /**
@@ -59,7 +60,7 @@ public class TcpUdpBridgeServer {
             LOGGER.fine("UDP: " + localUdpSocket.getLocalPort());
         }
         catch (IOException e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
         startBridge();
     }
@@ -89,7 +90,7 @@ public class TcpUdpBridgeServer {
 
                 }
                 catch (IOException e) {
-                    e.printStackTrace();
+                    LOGGER.log(Level.WARNING, "exception", e);
                 }
             }
 
@@ -124,7 +125,7 @@ public class TcpUdpBridgeServer {
 
                 }
                 catch (IOException e) {
-                    e.printStackTrace();
+                    LOGGER.log(Level.WARNING, "exception", e);
                 }
             }
 

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/nat/TransportCandidate.java

@@ -27,6 +27,7 @@ import java.nio.ByteBuffer;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Locale;
+import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.jivesoftware.smack.XMPPConnection;
@@ -356,7 +357,9 @@ public abstract class TransportCandidate {
 
 
                 try {
+                    // CHECKSTYLE:OFF
                 	InetAddress candAddress = InetAddress.getByName(getIp());
+                    // CHECKSTYLE:ON
                     isUsable = true;//candAddress.isReachable(TransportResolver.CHECK_TIMEOUT);
                 }
                 catch (Exception e) {
@@ -646,7 +649,7 @@ public abstract class TransportCandidate {
                 }
             }
             catch (UnsupportedEncodingException e) {
-                e.printStackTrace();
+                LOGGER.log(Level.WARNING, "exception", e);
             }
 
 
@@ -691,7 +694,7 @@ public abstract class TransportCandidate {
                             cont = (password + ";" + candidate.getIp() + ":" + candidate.getPort()).getBytes("UTF-8");
                         }
                         catch (UnsupportedEncodingException e) {
-                            e.printStackTrace();
+                            LOGGER.log(Level.WARNING, "exception", e);
                         }
 
                         packet.setData(cont);
@@ -706,7 +709,7 @@ public abstract class TransportCandidate {
                                 Thread.sleep(delay);
                             }
                             catch (InterruptedException e) {
-                                e.printStackTrace();
+                                LOGGER.log(Level.WARNING, "exception", e);
                             }
                         }
                     }
@@ -757,9 +760,11 @@ public abstract class TransportCandidate {
                                 String ip = addr[0];
                                 String pt = addr[1];
 
+                                // CHECKSTYLE:OFF
                                 if (pass.equals(password) 
                                 		&& transportCandidate.getIp().indexOf(ip) != -1 
                                 		&& transportCandidate.getPort() == Integer.parseInt(pt)) {
+                                    // CHECKSTYLE:ON
                                     LOGGER.fine("ECHO OK: " + candidate.getIp() + ":" + candidate.getPort() + " <-> " + transportCandidate.getIp() + ":" + transportCandidate.getPort());
                                     TestResult testResult = new TestResult();
                                     testResult.setResult(true);
@@ -770,7 +775,7 @@ public abstract class TransportCandidate {
 
                             }
                             catch (UnsupportedEncodingException e) {
-                                e.printStackTrace();
+                                LOGGER.log(Level.WARNING, "exception", e);
                             }
 
                             LOGGER.fine("ECHO Wrong Data: " + datagramPacket.getAddress().getHostAddress() + ":" + datagramPacket.getPort());
@@ -785,7 +790,7 @@ public abstract class TransportCandidate {
                         content = new String(password + ";" + getIp() + ":" + getPort()).getBytes("UTF-8");
                     }
                     catch (UnsupportedEncodingException e) {
-                        e.printStackTrace();
+                        LOGGER.log(Level.WARNING, "exception", e);
                     }
 
                     DatagramPacket packet = new DatagramPacket(content, content.length);
@@ -794,7 +799,7 @@ public abstract class TransportCandidate {
                         packet.setAddress(InetAddress.getByName(transportCandidate.getIp()));
                     }
                     catch (UnknownHostException e) {
-                        e.printStackTrace();
+                        LOGGER.log(Level.WARNING, "exception", e);
                     }
                     packet.setPort(transportCandidate.getPort());
 
@@ -808,7 +813,7 @@ public abstract class TransportCandidate {
                                 Thread.sleep(delay);
                             }
                             catch (InterruptedException e) {
-                                e.printStackTrace();
+                                LOGGER.log(Level.WARNING, "exception", e);
                             }
                         }
                     }
@@ -820,7 +825,7 @@ public abstract class TransportCandidate {
                         Thread.sleep(2000);
                     }
                     catch (InterruptedException e) {
-                        e.printStackTrace();
+                        LOGGER.log(Level.WARNING, "exception", e);
                     }
 
                     removeListener(listener);

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/nat/TransportNegotiator.java

@@ -21,6 +21,7 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Iterator;
 import java.util.List;
+import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.jivesoftware.smack.SmackException;
@@ -164,7 +165,7 @@ public abstract class TransportNegotiator extends JingleNegotiator {
             setNegotiatorState(JingleNegotiatorState.PENDING);
         } catch (Exception e) {
             // TODO Auto-generated catch block
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
 
     }
@@ -302,7 +303,7 @@ public abstract class TransportNegotiator extends JingleNegotiator {
                         try {
                             Thread.sleep(1000);
                         } catch (InterruptedException e) {
-                            e.printStackTrace();
+                            LOGGER.log(Level.WARNING, "exception", e);
                         }
 
                         // Once we are in pending state, look for any valid remote
@@ -397,7 +398,7 @@ public abstract class TransportNegotiator extends JingleNegotiator {
                         try {
                             Thread.sleep(500);
                         } catch (InterruptedException e) {
-                            e.printStackTrace();
+                            LOGGER.log(Level.WARNING, "exception", e);
                         }
 
                         bestRemote = getBestRemoteCandidate();
@@ -431,7 +432,7 @@ public abstract class TransportNegotiator extends JingleNegotiator {
                             session
                                     .terminate("Unable to negotiate session. This may be caused by firewall configuration problems.");
                         } catch (Exception e) {
-                            e.printStackTrace();
+                            LOGGER.log(Level.WARNING, "exception", e);
                         }
                     }
                 }

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/nat/TransportResolver.java

@@ -22,6 +22,7 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Iterator;
 import java.util.List;
+import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.jivesoftware.smack.SmackException;
@@ -372,7 +373,7 @@ public abstract class TransportResolver {
             LOGGER.fine("Transport resolved");
         }
         catch (Exception e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
     }
 
@@ -395,7 +396,7 @@ public abstract class TransportResolver {
                 return freePort;
             }
             catch (IOException e) {
-                e.printStackTrace();
+                LOGGER.log(Level.WARNING, "exception", e);
             }
         }
         try {
@@ -404,7 +405,7 @@ public abstract class TransportResolver {
             ss.close();
         }
         catch (IOException e) {
-            e.printStackTrace();
+            LOGGER.log(Level.WARNING, "exception", e);
         }
         return freePort;
     }

smack-legacy/src/main/java/org/jivesoftware/smackx/workgroup/ext/macros/MacroGroup.java

@@ -113,6 +113,7 @@ public class MacroGroup {
     }
 
     public String toXML() {
+        // CHECKSTYLE:OFF
     	StringBuilder buf = new StringBuilder();
     	buf.append("<macrogroup>");
     	buf.append("<title>" +  getTitle() + "</title>");
@@ -137,5 +138,6 @@ public class MacroGroup {
     	}
     	buf.append("</macrogroup>");
     	return buf.toString();
+        // CHECKSTYLE:ON
     }
 }

smack-legacy/src/main/java/org/jivesoftware/smackx/workgroup/ext/macros/Macros.java

@@ -83,9 +83,11 @@ public class Macros extends IQ {
             buf.append("<personal>true</personal>");
         }
         if (getPersonalMacroGroup() != null) {
+            // CHECKSTYLE:OFF
         	buf.append("<personalMacro>");
         	buf.append(StringUtils.escapeForXML(getPersonalMacroGroup().toXML()));
         	buf.append("</personalMacro>");
+            // CHECKSTYLE:ON
         }
 
         return buf;
@@ -123,6 +125,7 @@ public class Macros extends IQ {
         }
 
         public Macro parseMacro(XmlPullParser parser) throws XmlPullParserException, IOException {
+            // CHECKSTYLE:OFF
         	Macro macro = new Macro();
         	 boolean done = false;
             while (!done) {
@@ -149,9 +152,11 @@ public class Macros extends IQ {
 	            }
             }
         	return macro;
+            // CHECKSTYLE:ON
         }
 
         public MacroGroup parseMacroGroup(XmlPullParser parser) throws XmlPullParserException, IOException {
+            // CHECKSTYLE:OFF
         	MacroGroup group = new MacroGroup();
 
             boolean done = false;
@@ -175,10 +180,11 @@ public class Macros extends IQ {
 	            }
             }
         	return group; 
+            // CHECKSTYLE:ON
         }
 
         public MacroGroup parseMacroGroups(String macros) throws XmlPullParserException, IOException {
-
+            // CHECKSTYLE:OFF
         	MacroGroup group = null;
         	XmlPullParser parser = XmlPullParserFactory.newInstance().newPullParser();
         	parser.setInput(new StringReader(macros));
@@ -192,6 +198,7 @@ public class Macros extends IQ {
 				 }
 			}
 			return group;
+            // CHECKSTYLE:ON
         }
     }
 }

smack-legacy/src/main/java/org/jivesoftware/smackx/workgroup/user/Workgroup.java

@@ -469,13 +469,17 @@ public class Workgroup {
 
     private void fireInvitationEvent(WorkgroupInvitation invitation) {
         for (WorkgroupInvitationListener listener : invitationListeners ){
+            // CHECKSTYLE:OFF
     	    listener.invitationReceived(invitation);
+            // CHECKSTYLE:ON
         }
     }
 
     private void fireQueueJoinedEvent() {
         for (QueueListener listener : queueListeners){
+            // CHECKSTYLE:OFF
     	    listener.joinedQueue();
+            // CHECKSTYLE:ON
         }
     }
 

smack-legacy/src/main/java/org/jivesoftware/smackx/xroster/provider/RosterExchangeProvider.java

@@ -47,7 +47,7 @@ public class RosterExchangeProvider extends ExtensionElementProvider<RosterExcha
     @Override
     public RosterExchange parse(XmlPullParser parser, int initialDepth)
                     throws XmlPullParserException, IOException {
-
+        // CHECKSTYLE:OFF
         RosterExchange rosterExchange = new RosterExchange();
         boolean done = false;
         RemoteRosterEntry remoteRosterEntry = null;
@@ -78,7 +78,7 @@ public class RosterExchangeProvider extends ExtensionElementProvider<RosterExcha
                 }
             }
         }
-
+        // CHECKSTYLE:ON
         return rosterExchange;
 
     }

smack-tcp/src/test/java/org/jivesoftware/smack/sm/provider/ParseStreamManagementTest.java

@@ -97,8 +97,6 @@ public class ParseStreamManagementTest {
                 .element(errorCondition.toString(), XMPPError.NAMESPACE)
                 .asString(outputProperties);
 
-        System.err.println(failedStanza);
-
         StreamManagement.Failed failedPacket = ParseStreamManagement.failed(
                 PacketParserUtils.getParserFor(failedStanza));