Enable trailing whitespace checkstyle check

for all source code regions, including javadoc.

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

@@ -38,16 +38,16 @@ import org.jxmpp.stringprep.XmppStringprepException;
 /**
  * A dummy implementation of {@link XMPPConnection}, intended to be used during
  * unit tests.
- * 
+ *
  * Instances store any packets that are delivered to be send using the
  * {@link #sendStanza(Stanza)} method in a blocking queue. The content of this queue
  * can be inspected using {@link #getSentPacket()}. Typically these queues are
  * used to retrieve a message that was generated by the client.
- * 
+ *
  * Packets that should be processed by the client to simulate a received stanza
  * can be delivered using the {@linkplain #processStanza(Stanza)} method.
  * It invokes the registered stanza interceptors and listeners.
- * 
+ *
  * @see XMPPConnection
  * @author Guenther Niess
  */
@@ -130,7 +130,7 @@ public class DummyConnection extends AbstractXMPPConnection {
     /**
      * Returns the number of packets that's sent through {@link #sendStanza(Stanza)} and
      * that has not been returned by {@link #getSentPacket()}.
-     * 
+     *
      * @return the number of packets which are in the queue.
      */
     public int getNumberOfSentPackets() {
@@ -140,7 +140,7 @@ public class DummyConnection extends AbstractXMPPConnection {
     /**
      * Returns the first stanza that's sent through {@link #sendStanza(Stanza)}
      * and that has not been returned by earlier calls to this method.
-     * 
+     *
      * @return a sent packet.
      */
     public <P extends TopLevelStreamElement> P getSentPacket() {
@@ -152,7 +152,7 @@ public class DummyConnection extends AbstractXMPPConnection {
      * and that has not been returned by earlier calls to this method. This
      * method will block for up to the specified number of seconds if no packets
      * have been sent yet.
-     * 
+     *
      * @return a sent packet.
      */
     @SuppressWarnings("unchecked")

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

@@ -142,7 +142,7 @@ public class StanzaCollectorTest {
             consumer1.interrupt();
         } catch (InterruptedException e) {
         }
-        // We cannot guarantee that this is going to pass due to the possible issue of timing between consumer 1 
+        // We cannot guarantee that this is going to pass due to the possible issue of timing between consumer 1
         // and main, but the probability is extremely remote.
         assertNull(collector.pollResult());
     }

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

@@ -68,7 +68,7 @@ public class ThreadedDummyConnection extends DummyConnection {
 
     /**
      * Calling this method will cause the next sendStanza call with an IQ stanza to timeout.
-     * This is accomplished by simply stopping the auto creating of the reply stanza 
+     * This is accomplished by simply stopping the auto creating of the reply stanza
      * or processing one that was entered via {@link #processStanza(Stanza)}.
      */
     public void setTimeout() {

smack-core/src/test/java/org/jivesoftware/smack/packet/IQResponseTest.java

@@ -27,7 +27,7 @@ import org.jxmpp.stringprep.XmppStringprepException;
 
 /**
  * Tests that verifies the correct behavior of creating result and error IQ packets.
- * 
+ *
  * @see <a href="http://xmpp.org/rfcs/rfc3920.html#stanzas-semantics-iq">IQ Semantics</a>
  * @author Guenther Niess
  */
@@ -38,7 +38,7 @@ public class IQResponseTest {
 
     /**
      * Test creating a simple and empty IQ response.
-     * @throws XmppStringprepException 
+     * @throws XmppStringprepException
      */
     @Test
     public void testGeneratingSimpleResponse() throws XmppStringprepException {
@@ -58,7 +58,7 @@ public class IQResponseTest {
 
     /**
      * Test creating a error response based on an IQ request.
-     * @throws XmppStringprepException 
+     * @throws XmppStringprepException
      */
     @Test
     public void testGeneratingValidErrorResponse() throws XmppStringprepException {
@@ -83,7 +83,7 @@ public class IQResponseTest {
     /**
      * According to <a href="http://xmpp.org/rfcs/rfc3920.html#stanzas-semantics-iq"
      * >RFC3920: IQ Semantics</a> we shouldn't respond to an IQ of type result.
-     * @throws XmppStringprepException 
+     * @throws XmppStringprepException
      */
     @Test
     public void testGeneratingResponseBasedOnResult() throws XmppStringprepException {
@@ -106,7 +106,7 @@ public class IQResponseTest {
     /**
      * According to <a href="http://xmpp.org/rfcs/rfc3920.html#stanzas-semantics-iq"
      * >RFC3920: IQ Semantics</a> we shouldn't respond to an IQ of type error.
-     * @throws XmppStringprepException 
+     * @throws XmppStringprepException
      */
     @Test
     public void testGeneratingErrorBasedOnError() throws XmppStringprepException {

smack-core/src/test/java/org/jivesoftware/smack/packet/XMPPErrorTest.java

@@ -1,35 +1,35 @@
-/**
- *
- * Copyright © 2017 Ingo Bauersachs
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.jivesoftware.smack.packet;
-
-import static org.jivesoftware.smack.packet.StanzaError.Condition;
-import static org.jivesoftware.smack.packet.StanzaError.Type;
-import static org.junit.Assert.assertEquals;
-
-import java.util.Map;
-
-import org.junit.Test;
-
-public class XMPPErrorTest {
-    @Test
-    public void testConditionHasDefaultTypeMapping() throws NoSuchFieldException, IllegalAccessException {
-        Map<Condition, Type> conditionToTypeMap = StanzaError.CONDITION_TO_TYPE;
-        assertEquals("CONDITION_TO_TYPE map is likely out of sync with Condition enum",
-                Condition.values().length,
-                conditionToTypeMap.size());
-    }
-}
+/**
+ *
+ * Copyright © 2017 Ingo Bauersachs
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.jivesoftware.smack.packet;
+
+import static org.jivesoftware.smack.packet.StanzaError.Condition;
+import static org.jivesoftware.smack.packet.StanzaError.Type;
+import static org.junit.Assert.assertEquals;
+
+import java.util.Map;
+
+import org.junit.Test;
+
+public class XMPPErrorTest {
+    @Test
+    public void testConditionHasDefaultTypeMapping() throws NoSuchFieldException, IllegalAccessException {
+        Map<Condition, Type> conditionToTypeMap = StanzaError.CONDITION_TO_TYPE;
+        assertEquals("CONDITION_TO_TYPE map is likely out of sync with Condition enum",
+                Condition.values().length,
+                conditionToTypeMap.size());
+    }
+}

smack-core/src/test/java/org/jivesoftware/smack/parsing/ParsingExceptionTest.java

@@ -53,7 +53,7 @@ public class ParsingExceptionTest {
 
     @Test
     public void consumeUnparsedInput() throws Exception {
-        final String MESSAGE_EXCEPTION_ELEMENT = 
+        final String MESSAGE_EXCEPTION_ELEMENT =
                         "<" + ThrowException.ELEMENT + " xmlns='" + ThrowException.NAMESPACE + "'>" +
                             "<nothingInHere>" +
                             "</nothingInHere>" +

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

@@ -671,7 +671,7 @@ public class PacketParserUtilsTest {
     /**
      * RFC6121 5.2.3 explicitly disallows mixed content in <body/> elements. Make sure that we throw
      * an exception if we encounter such an element.
-     * 
+     *
      * @throws Exception
      */
     @Test(expected = XmlPullParserException.class)