diff --git a/smack-core/src/integration-test/java/org/jivesoftware/smack/RosterSmackTest.java b/smack-core/src/integration-test/java/org/jivesoftware/smack/RosterSmackTest.java
index ef9535128..d270e5211 100644
--- a/smack-core/src/integration-test/java/org/jivesoftware/smack/RosterSmackTest.java
+++ b/smack-core/src/integration-test/java/org/jivesoftware/smack/RosterSmackTest.java
@@ -256,7 +256,7 @@ public class RosterSmackTest extends SmackTestCase {
 
     /**
      * 1. Create an unfiled entry with no name
-     * 2. Check that the the entry does not belong to any group
+     * 2. Check that the entry does not belong to any group
      * 3. Change its name and add it to a group
      * 4. Check that the name has been modified and that the entry belongs to a group
      */
diff --git a/smack-core/src/main/java/org/jivesoftware/smack/AbstractXMPPConnection.java b/smack-core/src/main/java/org/jivesoftware/smack/AbstractXMPPConnection.java
index 3cea10d69..913071fa6 100644
--- a/smack-core/src/main/java/org/jivesoftware/smack/AbstractXMPPConnection.java
+++ b/smack-core/src/main/java/org/jivesoftware/smack/AbstractXMPPConnection.java
@@ -799,7 +799,7 @@ public abstract class AbstractXMPPConnection implements XMPPConnection {
         // Indicate that we're now authenticated.
         this.authenticated = true;
 
-        // If debugging is enabled, change the the debug window title to include the
+        // If debugging is enabled, change the debug window title to include the
         // name we are now logged-in as.
         // If DEBUG was set to true AFTER the connection was created the debugger
         // will be null
diff --git a/smack-core/src/main/java/org/jivesoftware/smack/XMPPConnection.java b/smack-core/src/main/java/org/jivesoftware/smack/XMPPConnection.java
index 49252ac41..6b6c40334 100644
--- a/smack-core/src/main/java/org/jivesoftware/smack/XMPPConnection.java
+++ b/smack-core/src/main/java/org/jivesoftware/smack/XMPPConnection.java
@@ -380,7 +380,7 @@ public interface XMPPConnection {
     /**
      * Registers a stanza listener with this connection. The listener will be invoked when a (matching) incoming stanza
      * is received. The stanza filter determines which stanzas will be delivered to the listener. It is guaranteed that
-     * the same listener will not be invoked concurrently and the the order of invocation will reflect the order in
+     * the same listener will not be invoked concurrently and the order of invocation will reflect the order in
      * which the stanzas have been received. If the same stanza listener is added again with a different filter, only
      * the new filter will be used.
      *
diff --git a/smack-core/src/main/java/org/jivesoftware/smack/packet/StanzaBuilder.java b/smack-core/src/main/java/org/jivesoftware/smack/packet/StanzaBuilder.java
index f0c379fe8..ec8bdac3c 100644
--- a/smack-core/src/main/java/org/jivesoftware/smack/packet/StanzaBuilder.java
+++ b/smack-core/src/main/java/org/jivesoftware/smack/packet/StanzaBuilder.java
@@ -111,7 +111,7 @@ public abstract class StanzaBuilder<B extends StanzaBuilder<B>> implements Stanz
     }
 
     /**
-     * Sets who the the stanza is being sent "from".
+     * Sets who the stanza is being sent "from".
      *
      * @param from who the stanza is being sent from.
      * @return a reference to this builder.
diff --git a/smack-experimental/src/main/java/org/jivesoftware/smackx/mam/MamManager.java b/smack-experimental/src/main/java/org/jivesoftware/smackx/mam/MamManager.java
index 546e0d79c..94dfc2f07 100644
--- a/smack-experimental/src/main/java/org/jivesoftware/smackx/mam/MamManager.java
+++ b/smack-experimental/src/main/java/org/jivesoftware/smackx/mam/MamManager.java
@@ -237,7 +237,7 @@ public final class MamManager extends Manager {
     }
 
     /**
-     * The the XMPP address of this MAM archive. Note that this method may return {@code null} if this MamManager
+     * the XMPP address of this MAM archive. Note that this method may return {@code null} if this MamManager
      * handles the local entity's archive and if the connection has never been authenticated at least once.
      *
      * @return the XMPP address of this MAM archive or {@code null}.
diff --git a/smack-extensions/src/integration-test/java/org/jivesoftware/smackx/muc/MultiUserChatCreationTest.java b/smack-extensions/src/integration-test/java/org/jivesoftware/smackx/muc/MultiUserChatCreationTest.java
index 06baae159..896821c62 100644
--- a/smack-extensions/src/integration-test/java/org/jivesoftware/smackx/muc/MultiUserChatCreationTest.java
+++ b/smack-extensions/src/integration-test/java/org/jivesoftware/smackx/muc/MultiUserChatCreationTest.java
@@ -52,7 +52,7 @@ public class MultiUserChatCreationTest extends SmackTestCase {
             // Create the room
             muc.create("testbot1");
 
-            // Get the the room's configuration form
+            // Get the room's configuration form
             Form form = muc.getConfigurationForm();
             assertNotNull("No room configuration form", form);
             // Create a new form to submit based on the original form
diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/chatstates/ChatStateManager.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/chatstates/ChatStateManager.java
index b010c2329..4af2d2bca 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/chatstates/ChatStateManager.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/chatstates/ChatStateManager.java
@@ -94,7 +94,7 @@ public final class ChatStateManager extends Manager {
      * not yet exist.
      *
      * @param connection the connection to return the ChatStateManager
-     * @return the ChatStateManager related the the connection.
+     * @return the ChatStateManager related the connection.
      */
     public static synchronized ChatStateManager getInstance(final XMPPConnection connection) {
             ChatStateManager manager = INSTANCES.get(connection);
diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/commands/AdHocCommand.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/commands/AdHocCommand.java
index c7815fa8c..347c08f69 100755
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/commands/AdHocCommand.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/commands/AdHocCommand.java
@@ -108,7 +108,7 @@ public abstract class AdHocCommand {
     }
 
     /**
-     * Set the the human readable name of the command, usually used for
+     * Set the human readable name of the command, usually used for
      * displaying in a UI.
      *
      * @param name the name.
diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/filetransfer/IncomingFileTransfer.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/filetransfer/IncomingFileTransfer.java
index 5c66d4e04..c09e9fcb2 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/filetransfer/IncomingFileTransfer.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/filetransfer/IncomingFileTransfer.java
@@ -111,7 +111,7 @@ public class IncomingFileTransfer extends FileTransfer {
      * @param file The location to save the file.
      * @throws SmackException when the file transfer fails
      * @throws IOException if an I/O error occurred.
-     * @throws IllegalArgumentException This exception is thrown when the the provided file is
+     * @throws IllegalArgumentException This exception is thrown when the provided file is
      *         either null, or cannot be written to.
      */
     public void receiveFile(final File file) throws SmackException, IOException {
diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/muc/InvitationListener.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/muc/InvitationListener.java
index 74699fa4e..71397aa04 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/muc/InvitationListener.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/muc/InvitationListener.java
@@ -35,7 +35,7 @@ public interface InvitationListener {
      * Called when the an invitation to join a MUC room is received.<p>
      *
      * If the room is password-protected, the invitee will receive a password to use to join
-     * the room. If the room is members-only, the the invitee may be added to the member list.
+     * the room. If the room is members-only, the invitee may be added to the member list.
      *
      * @param conn the XMPPConnection that received the invitation.
      * @param room the room that invitation refers to.
diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/muc/MucEnterConfiguration.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/muc/MucEnterConfiguration.java
index 8a6b4b2fd..ef3e17ba7 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/muc/MucEnterConfiguration.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/muc/MucEnterConfiguration.java
@@ -67,7 +67,7 @@ public final class MucEnterConfiguration {
         else {
             joinPresenceBuilder = builder.joinPresence.asBuilder();
         }
-        // Indicate the the client supports MUC
+        // Indicate the client supports MUC
         joinPresenceBuilder.addExtension(new MUCInitialPresence(password, maxChars, maxStanzas, seconds,
                         since));
         joinPresence = joinPresenceBuilder.build();
diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/muc/MultiUserChat.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/muc/MultiUserChat.java
index 9620e305b..65fc31746 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/muc/MultiUserChat.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/muc/MultiUserChat.java
@@ -994,7 +994,7 @@ public class MultiUserChat {
      * will be sent to the room which in turn will forward the invitation to the invitee.<p>
      *
      * If the room is password-protected, the invitee will receive a password to use to join
-     * the room. If the room is members-only, the the invitee may be added to the member list.
+     * the room. If the room is members-only, the invitee may be added to the member list.
      *
      * @param user the user to invite to the room.(e.g. hecate@shakespeare.lit)
      * @param reason the reason why the user is being invited.
@@ -1010,7 +1010,7 @@ public class MultiUserChat {
      * will be sent to the room which in turn will forward the invitation to the invitee.<p>
      *
      * If the room is password-protected, the invitee will receive a password to use to join
-     * the room. If the room is members-only, the the invitee may be added to the member list.
+     * the room. If the room is members-only, the invitee may be added to the member list.
      *
      * @param message the message to use for sending the invitation.
      * @param user the user to invite to the room.(e.g. hecate@shakespeare.lit)
@@ -1040,7 +1040,7 @@ public class MultiUserChat {
      * will be sent to the room which in turn will forward the invitation to the invitee.<p>
      *
      * If the room is password-protected, the invitee will receive a password to use to join
-     * the room. If the room is members-only, the the invitee may be added to the member list.
+     * the room. If the room is members-only, the invitee may be added to the member list.
      *
      * @param messageBuilder the message to use for sending the invitation.
      * @param user the user to invite to the room.(e.g. hecate@shakespeare.lit)
diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/pubsub/ItemDeleteEvent.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/pubsub/ItemDeleteEvent.java
index bb521c95a..424c3da0b 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/pubsub/ItemDeleteEvent.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/pubsub/ItemDeleteEvent.java
@@ -28,7 +28,7 @@ public class ItemDeleteEvent extends SubscriptionEvent {
     private List<String> itemIds = Collections.emptyList();
 
     /**
-     * Constructs an <code>ItemDeleteEvent</code> that indicates the the supplied
+     * Constructs an <code>ItemDeleteEvent</code> that indicates the supplied
      * items (by id) have been deleted, and that the event matches the listed
      * subscriptions.  The subscriptions would have been created by calling
      * {@link LeafNode#subscribe(String)}.
diff --git a/smack-im/src/main/java/org/jivesoftware/smack/roster/Roster.java b/smack-im/src/main/java/org/jivesoftware/smack/roster/Roster.java
index 6be271c18..8df18a77b 100644
--- a/smack-im/src/main/java/org/jivesoftware/smack/roster/Roster.java
+++ b/smack-im/src/main/java/org/jivesoftware/smack/roster/Roster.java
@@ -785,7 +785,7 @@ public final class Roster extends Manager {
      *
      * @param jid the XMPP address of the contact (e.g. johndoe@jabber.org)
      * @param name the nickname of the user.
-     * @param groups the list of group names the entry will belong to, or <code>null</code> if the the roster entry won't
+     * @param groups the list of group names the entry will belong to, or <code>null</code> if the roster entry won't
      *        belong to a group.
      * @throws NoResponseException if there was no response from the server.
      * @throws XMPPErrorException if an XMPP exception occurs.
diff --git a/smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/JingleSession.java b/smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/JingleSession.java
index c202ac9b5..dabc962b0 100644
--- a/smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/JingleSession.java
+++ b/smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/JingleSession.java
@@ -487,7 +487,7 @@ public final class JingleSession extends JingleNegotiator implements MediaReceiv
                 }
             }
 
-            // The the packet.
+            // the packet.
             // CHECKSTYLE:OFF
             if ((getConnection() != null) && getConnection().isConnected())
                 getConnection().sendStanza(jout);
diff --git a/smack-legacy/src/main/java/org/jivesoftware/smackx/workgroup/user/Workgroup.java b/smack-legacy/src/main/java/org/jivesoftware/smackx/workgroup/user/Workgroup.java
index 9ca424c18..59ad7c4dc 100644
--- a/smack-legacy/src/main/java/org/jivesoftware/smackx/workgroup/user/Workgroup.java
+++ b/smack-legacy/src/main/java/org/jivesoftware/smackx/workgroup/user/Workgroup.java
@@ -463,7 +463,7 @@ public class Workgroup {
 
     /**
      * Adds an invitation listener that will be notified of groupchat invitations
-     * from the workgroup for the the user that created this Workgroup instance.
+     * from the workgroup for the user that created this Workgroup instance.
      *
      * @param invitationListener the invitation listener.
      */
diff --git a/smack-openpgp/src/main/java/org/jivesoftware/smackx/ox/listener/SigncryptElementReceivedListener.java b/smack-openpgp/src/main/java/org/jivesoftware/smackx/ox/listener/SigncryptElementReceivedListener.java
index 0e503e908..a4bb59de4 100644
--- a/smack-openpgp/src/main/java/org/jivesoftware/smackx/ox/listener/SigncryptElementReceivedListener.java
+++ b/smack-openpgp/src/main/java/org/jivesoftware/smackx/ox/listener/SigncryptElementReceivedListener.java
@@ -31,7 +31,7 @@ public interface SigncryptElementReceivedListener {
      * This listener is intended to be used by implementors of different OX usage profiles. In order to listen for
      * OX-IM messages, please refer to the {@link OxMessageListener} instead.
      * @param contact sender of the message
-     * @param originalMessage original message containing the the {@link SigncryptElement}
+     * @param originalMessage original message containing the {@link SigncryptElement}
      * @param signcryptElement the {@link SigncryptElement} itself
      * @param metadata metadata about the encryption and signing
      */
diff --git a/smack-sasl-javax/src/main/java/org/jivesoftware/smack/sasl/javax/SASLExternalMechanism.java b/smack-sasl-javax/src/main/java/org/jivesoftware/smack/sasl/javax/SASLExternalMechanism.java
index d0f24e537..f0c409c49 100644
--- a/smack-sasl-javax/src/main/java/org/jivesoftware/smack/sasl/javax/SASLExternalMechanism.java
+++ b/smack-sasl-javax/src/main/java/org/jivesoftware/smack/sasl/javax/SASLExternalMechanism.java
@@ -31,7 +31,7 @@ package org.jivesoftware.smack.sasl.javax;
  *  <li>javax.net.ssl.keyStore to the location of the keyStore
  *  <li>javax.net.ssl.keyStorePassword to the password of the keyStore
  *  <li>javax.net.ssl.trustStore to the location of the trustStore
- *  <li>javax.net.ssl.trustStorePassword to the the password of the trustStore
+ *  <li>javax.net.ssl.trustStorePassword to the password of the trustStore
  *  </ul>
  *
  * Then, when the server requests or requires the client certificate, java will
diff --git a/smack-tcp/src/main/java/org/jivesoftware/smack/tcp/XMPPTCPConnection.java b/smack-tcp/src/main/java/org/jivesoftware/smack/tcp/XMPPTCPConnection.java
index 0314db7f8..e093ce1a6 100644
--- a/smack-tcp/src/main/java/org/jivesoftware/smack/tcp/XMPPTCPConnection.java
+++ b/smack-tcp/src/main/java/org/jivesoftware/smack/tcp/XMPPTCPConnection.java
@@ -1443,7 +1443,7 @@ public class XMPPTCPConnection extends AbstractXMPPConnection {
                 // closed in shutdown().
             }
             catch (Exception e) {
-                // The exception can be ignored if the the connection is 'done'
+                // The exception can be ignored if the connection is 'done'
                 // or if the it was caused because the socket got closed
                 if (!(done() || queue.isShutdown())) {
                     // Set running to false since this thread will exit here and notifyConnectionError() will wait until