Lint fixes: Remove dead code, etc.

- make method static when possible
- remove never thrown Exception declarations
- other fixes

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

@@ -485,7 +485,7 @@ public String getStreamId() {
     }
 
     protected void bindResourceAndEstablishSession(String resource) throws XMPPErrorException,
-                    IOException, SmackException, InterruptedException {
+                    SmackException, InterruptedException {
 
         // Wait until either:
         // - the servers last features stanza has been parsed
@@ -1392,6 +1392,7 @@ else if (eventType == XmlPullParser.END_TAG && parser.getDepth() == initialDepth
         afterFeaturesReceived();
     }
 
+    @SuppressWarnings("unused")
     protected void afterFeaturesReceived() throws SecurityRequiredException, NotConnectedException, InterruptedException {
         // Default implementation does nothing
     }

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

@@ -30,15 +30,13 @@
 import java.util.List;
 import java.util.ArrayList;
 
-import javax.xml.parsers.ParserConfigurationException;
-
 /**
  *
  */
 public class MessageTest {
 
     @Test
-    public void setMessageTypeTest() throws IOException, SAXException, ParserConfigurationException {
+    public void setMessageTypeTest() throws IOException, SAXException {
         Message.Type type = Message.Type.chat;
         Message.Type type2 = Message.Type.headline;
 
@@ -76,7 +74,7 @@ public void setNullMessageBodyTest() {
     }
 
     @Test
-    public void setMessageSubjectTest() throws IOException, SAXException, ParserConfigurationException {
+    public void setMessageSubjectTest() throws IOException, SAXException {
         final String messageSubject = "This is a test of the emergency broadcast system.";
 
         StringBuilder controlBuilder = new StringBuilder();
@@ -95,7 +93,7 @@ public void setMessageSubjectTest() throws IOException, SAXException, ParserConf
     }
 
     @Test
-    public void oneMessageBodyTest() throws IOException, SAXException, ParserConfigurationException {
+    public void oneMessageBodyTest() throws IOException, SAXException {
         final String messageBody = "This is a test of the emergency broadcast system.";
 
         StringBuilder controlBuilder = new StringBuilder();
@@ -114,7 +112,7 @@ public void oneMessageBodyTest() throws IOException, SAXException, ParserConfigu
     }
 
     @Test
-    public void multipleMessageBodiesTest() throws IOException, SAXException, ParserConfigurationException {
+    public void multipleMessageBodiesTest() throws IOException, SAXException {
         final String messageBody1 = "This is a test of the emergency broadcast system, 1.";
         final String lang2 = "ru";
         final String messageBody2 = "This is a test of the emergency broadcast system, 2.";
@@ -172,7 +170,7 @@ public void removeMessageBodyTest() {
     }
 
     @Test
-    public void setMessageThreadTest() throws IOException, SAXException, ParserConfigurationException {
+    public void setMessageThreadTest() throws IOException, SAXException {
         final String messageThread = "1234";
 
         StringBuilder controlBuilder = new StringBuilder();
@@ -191,7 +189,7 @@ public void setMessageThreadTest() throws IOException, SAXException, ParserConfi
     }
 
     @Test
-    public void messageXmlLangTest() throws IOException, SAXException, ParserConfigurationException {
+    public void messageXmlLangTest() throws IOException, SAXException {
         final String lang = "sp";
 
         StringBuilder controlBuilder = new StringBuilder();

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

@@ -27,14 +27,12 @@
 
 import java.io.IOException;
 
-import javax.xml.parsers.ParserConfigurationException;
-
 /**
  *
  */
 public class PresenceTest {
     @Test
-    public void setPresenceTypeTest() throws IOException, SAXException, ParserConfigurationException {
+    public void setPresenceTypeTest() throws IOException, SAXException {
         Presence.Type type = Presence.Type.unavailable;
         Presence.Type type2 = Presence.Type.subscribe;
 
@@ -81,7 +79,7 @@ public void isPresenceAvailableTest() {
     }
 
     @Test
-    public void setPresenceStatusTest() throws IOException, SAXException, ParserConfigurationException {
+    public void setPresenceStatusTest() throws IOException, SAXException {
         final String status = "This is a test of the emergency broadcast system.";
 
         StringBuilder controlBuilder = new StringBuilder();
@@ -100,7 +98,7 @@ public void setPresenceStatusTest() throws IOException, SAXException, ParserConf
     }
 
     @Test
-    public void setPresencePriorityTest() throws IOException, SAXException, ParserConfigurationException {
+    public void setPresencePriorityTest() throws IOException, SAXException {
         final int priority = 10;
 
         StringBuilder controlBuilder = new StringBuilder();
@@ -124,7 +122,7 @@ public void setIllegalPriorityTest() {
     }
 
     @Test
-    public void setPresenceModeTest() throws IOException, SAXException, ParserConfigurationException {
+    public void setPresenceModeTest() throws IOException, SAXException {
         Presence.Mode mode1 = Presence.Mode.dnd;
                 final int priority = 10;
         final String status = "This is a test of the emergency broadcast system.";
@@ -175,7 +173,7 @@ public void isModeAwayTest() {
     }
 
     @Test
-    public void presenceXmlLangTest() throws IOException, SAXException, ParserConfigurationException {
+    public void presenceXmlLangTest() throws IOException, SAXException {
         final String lang = "sp";
 
         StringBuilder controlBuilder = new StringBuilder();

smack-extensions/src/main/java/org/jivesoftware/smackx/bookmarks/BookmarkManager.java

@@ -66,11 +66,12 @@ public synchronized static BookmarkManager getBookmarkManager(XMPPConnection con
         BookmarkManager manager = bookmarkManagerMap.get(connection);
         if (manager == null) {
             manager = new BookmarkManager(connection);
+            bookmarkManagerMap.put(connection, manager);
         }
         return manager;
     }
 
-    private PrivateDataManager privateDataManager;
+    private final PrivateDataManager privateDataManager;
     private Bookmarks bookmarks;
     private final Object bookmarkLock = new Object();
 
@@ -80,9 +81,8 @@ public synchronized static BookmarkManager getBookmarkManager(XMPPConnection con
      *
      * @param connection the connection for persisting and retrieving bookmarks.
      */
-    private BookmarkManager(XMPPConnection connection) throws XMPPException, SmackException {
+    private BookmarkManager(XMPPConnection connection) {
         privateDataManager = PrivateDataManager.getInstanceFor(connection);
-        bookmarkManagerMap.put(connection, this);
     }
 
     /**

smack-extensions/src/main/java/org/jivesoftware/smackx/chatstates/ChatStateManager.java

@@ -142,7 +142,7 @@ private synchronized boolean updateChatState(Chat chat, ChatState newState) {
         return false;
     }
 
-    private void fireNewChatState(Chat chat, ChatState state) {
+    private static void fireNewChatState(Chat chat, ChatState state) {
         for (ChatMessageListener listener : chat.getListeners()) {
             if (listener instanceof ChatStateListener) {
                 ((ChatStateListener) listener).stateChanged(chat, state);

smack-extensions/src/main/java/org/jivesoftware/smackx/commands/AdHocCommandManager.java

@@ -574,7 +574,7 @@ else if (Action.cancel.equals(action)) {
      * @param condition the condition of the error.
      * @throws NotConnectedException 
      */
-    private IQ respondError(AdHocCommandData response,
+    private static IQ respondError(AdHocCommandData response,
             XMPPError.Condition condition) {
         return respondError(response, new XMPPError(condition));
     }

smack-extensions/src/main/java/org/jivesoftware/smackx/filetransfer/IncomingFileTransfer.java

@@ -31,6 +31,7 @@
 import java.util.logging.Logger;
 
 import org.jivesoftware.smack.SmackException;
+import org.jivesoftware.smack.SmackException.NoResponseException;
 import org.jivesoftware.smack.XMPPException.XMPPErrorException;
 
 
@@ -193,10 +194,20 @@ public InputStream call() throws Exception {
         try {
             inputStream = streamNegotiatorTask.get(15, TimeUnit.SECONDS);
         }
-        catch (InterruptedException e) {
-            throw new SmackException("Interruption while executing", e);
-        }
         catch (ExecutionException e) {
+            final Throwable cause = e.getCause();
+            if (cause instanceof XMPPErrorException) {
+                throw (XMPPErrorException) cause;
+            }
+            if (cause instanceof InterruptedException) {
+                throw (InterruptedException) cause;
+            }
+            if (cause instanceof NoResponseException) {
+                throw (NoResponseException) cause;
+            }
+            if (cause instanceof SmackException) {
+                throw (SmackException) cause;
+            }
             throw new SmackException("Error in execution", e);
         }
         catch (TimeoutException e) {

smack-extensions/src/main/java/org/jivesoftware/smackx/filetransfer/StreamNegotiator.java

@@ -87,9 +87,7 @@ protected static StreamInitiation createInitiationAccept(
     }
 
     protected final IQ initiateIncomingStream(final XMPPConnection connection, StreamInitiation initiation)
-    // CHECKSTYLE:OFF
-				   throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
-    // CHECKSTYLE:ON
+                    throws NoResponseException, XMPPErrorException, NotConnectedException {
         final StreamInitiation response = createInitiationAccept(initiation,
                 getNamespaces());
 

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

@@ -47,16 +47,6 @@ public PubSub(Jid to, Type type, PubSubNamespace ns) {
         setType(type);
     }
 
-	/**
-    * Returns the XML element name of the extension sub-packet root element.
-    *
-    * @return the XML element name of the stanza(/packet) extension.
-    */
-    @SuppressWarnings("static-method")
-    public String getElementName() {
-        return ELEMENT;
-    }
-
     @SuppressWarnings("unchecked")
     public <PE extends ExtensionElement> PE getExtension(PubSubElementType elem)
 	{

smack-extensions/src/main/java/org/jivesoftware/smackx/xdatalayout/provider/DataLayoutProvider.java

@@ -19,7 +19,6 @@
 import java.io.IOException;
 import java.util.List;
 
-import org.jivesoftware.smack.SmackException;
 import org.jivesoftware.smackx.xdatalayout.packet.DataLayout;
 import org.jivesoftware.smackx.xdatalayout.packet.DataLayout.DataFormLayoutElement;
 import org.jivesoftware.smackx.xdatalayout.packet.DataLayout.Fieldref;
@@ -37,8 +36,7 @@
  */
 public class DataLayoutProvider {
 
-    public static DataLayout parse(XmlPullParser parser) throws XmlPullParserException, IOException,
-                    SmackException {
+    public static DataLayout parse(XmlPullParser parser) throws XmlPullParserException, IOException {
         DataLayout dataLayout = new DataLayout(parser.getAttributeValue("", "label"));
         parseLayout(dataLayout.getPageLayout(), parser);
         return dataLayout;

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

@@ -360,7 +360,7 @@ public Set<ChatManagerListener> getChatListeners() {
         return Collections.unmodifiableSet(chatManagerListeners);
     }
 
-    private void deliverMessage(Chat chat, Message message) {
+    private static void deliverMessage(Chat chat, Message message) {
         // Here we will run any interceptors
         chat.deliver(message);
     }

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

@@ -177,7 +177,7 @@ public boolean resetEntries(Collection<Item> items, String version) {
         return setRosterVersion(version);
     }
 
-    private Item readEntry(File file) {
+    private static Item readEntry(File file) {
         String s = FileUtils.readFile(file);
         if (s == null) {
             return null;

smack-im/src/test/java/org/jivesoftware/smack/chat/ChatConnectionTest.java

@@ -322,7 +322,7 @@ public void chatNotMatchedWithTypeNormal() {
         assertNull(listener.getNewChat());
     }
 
-    private Message createChatPacket(final String threadId, final boolean isFullJid) {
+    private static Message createChatPacket(final String threadId, final boolean isFullJid) {
         Message chatMsg = new Message(JidTestUtil.BARE_JID_1, Message.Type.chat);
         chatMsg.setBody("the body message - " + System.currentTimeMillis());
         Jid jid;

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

@@ -21,7 +21,6 @@
 
 import org.jivesoftware.smack.DummyConnection;
 import org.jivesoftware.smack.SmackException;
-import org.jivesoftware.smack.XMPPException;
 import org.junit.Before;
 import org.junit.Test;
 
@@ -37,7 +36,7 @@ public class RosterOfflineTest {
     Roster roster;
 
     @Before
-    public void setup() throws XMPPException, SmackException {
+    public void setup() {
         this.connection = new DummyConnection();
         assertFalse(connection.isConnected());
 

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

@@ -32,7 +32,6 @@
 
 import org.jivesoftware.smack.DummyConnection;
 import org.jivesoftware.smack.SmackException;
-import org.jivesoftware.smack.XMPPException;
 import org.jivesoftware.smack.im.InitSmackIm;
 import org.jivesoftware.smack.packet.ErrorIQ;
 import org.jivesoftware.smack.packet.IQ;
@@ -511,8 +510,7 @@ public void testEmptyGroupRosterPush() throws Throwable {
      * @param connection the dummy connection of which the provided roster belongs to.
      * @param roster the roster (or buddy list) which should be initialized.
      */
-    public static void removeAllRosterEntries(DummyConnection connection, Roster roster)
-            throws InterruptedException, XMPPException {
+    public static void removeAllRosterEntries(DummyConnection connection, Roster roster) {
         for(RosterEntry entry : roster.getEntries()) {
             // prepare the roster push packet
             final RosterPacket rosterPush= new RosterPacket();
@@ -539,7 +537,7 @@ public static void removeAllRosterEntries(DummyConnection connection, Roster ros
      * @throws SmackException 
      * @throws XmppStringprepException 
      */
-    private void initRoster() throws InterruptedException, XMPPException, SmackException, XmppStringprepException {
+    private void initRoster() throws InterruptedException, SmackException, XmppStringprepException {
         roster.reload();
         while (true) {
             final Stanza sentPacket = connection.getSentPacket();

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

@@ -135,7 +135,7 @@ public void testEqualVersionStored() throws InterruptedException, IOException, X
      * @throws XmppStringprepException 
      */
     @Test(timeout = 5000)
-    public void testOtherVersionStored() throws InterruptedException, XMPPException, SmackException, XmppStringprepException {
+    public void testOtherVersionStored() throws XMPPException, SmackException, XmppStringprepException {
         Item vaglafItem = vaglafItem();
 
         // We expect that the roster request is the only packet sent. This is not part of the specification,
@@ -226,7 +226,7 @@ public void testRosterVersioningWithCachedRosterAndPushes() throws Throwable {
         }
     }
 
-    private Item vaglafItem() throws XmppStringprepException {
+    private static Item vaglafItem() throws XmppStringprepException {
         Item item = new Item(JidCreate.from("vaglaf@example.com"), "vaglaf the only");
         item.setItemType(ItemType.both);
         item.addGroupName("all");
@@ -235,7 +235,7 @@ private Item vaglafItem() throws XmppStringprepException {
         return item;
     }
 
-    private void populateStore(RosterStore store) throws IOException {
+    private static void populateStore(RosterStore store) throws IOException {
         store.addEntry(new RosterPacket.Item(JidCreate.from("geoff@example.com"), "geoff hurley"), "");
 
         RosterPacket.Item item = new RosterPacket.Item(JidCreate.from("joe@example.com"), "joe stevens");
@@ -249,7 +249,7 @@ private void populateStore(RosterStore store) throws IOException {
         store.addEntry(item, "v96");
     }
 
-    private void answerWithEmptyRosterResult() throws InterruptedException {
+    private void answerWithEmptyRosterResult() {
         // We expect that the roster request is the only packet sent. This is not part of the specification,
         // but a shortcut in the test implementation.
         Stanza sentPacket = connection.getSentPacket();

smack-java7/src/main/java/org/jivesoftware/smack/util/stringencoder/java7/Base64.java

@@ -898,7 +898,7 @@ public static byte[] decode( String s, int options )
         if( bytes != null && bytes.length >= 4 )
         {
 
-            int head = ((int)bytes[0] & 0xff) | ((bytes[1] << 8) & 0xff00);
+            int head = (bytes[0] & 0xff) | ((bytes[1] << 8) & 0xff00);
             if( java.util.zip.GZIPInputStream.GZIP_MAGIC == head )
             {
                 java.io.ByteArrayInputStream  bais = null;
@@ -969,12 +969,10 @@ public static Object decodeToObject( String encodedObject )
         catch( java.io.IOException e )
         {
             LOGGER.log(Level.SEVERE, "Error reading object", e);
-            obj = null;
         }   // end catch
         catch( java.lang.ClassNotFoundException e )
         {
             LOGGER.log(Level.SEVERE, "Class not found for encoded object", e);
-            obj = null;
         }   // end catch
         finally
         {