src/share/classes/javax/swing/tree/DefaultTreeModel.java

rev 1527 : 6727662: Code improvement and warnings removing from swing packages
Summary: Removed unnecessary castings and other warnings
Reviewed-by: malenkov

*** 449,460 ****
       * @see #removeTreeModelListener
       *
       * @since 1.4
       */
      public TreeModelListener[] getTreeModelListeners() {
!         return (TreeModelListener[])listenerList.getListeners(
!                 TreeModelListener.class);
      }
  
      /**
       * Notifies all listeners that have registered interest for
       * notification on this event type.  The event instance
--- 449,459 ----
       * @see #removeTreeModelListener
       *
       * @since 1.4
       */
      public TreeModelListener[] getTreeModelListeners() {
!         return listenerList.getListeners(TreeModelListener.class);
      }
  
      /**
       * Notifies all listeners that have registered interest for
       * notification on this event type.  The event instance
*** 645,655 ****
          return listenerList.getListeners(listenerType);
      }
  
      // Serialization support.
      private void writeObject(ObjectOutputStream s) throws IOException {
!         Vector      values = new Vector();
  
          s.defaultWriteObject();
          // Save the root, if its Serializable.
          if(root != null && root instanceof Serializable) {
              values.addElement("root");
--- 644,654 ----
          return listenerList.getListeners(listenerType);
      }
  
      // Serialization support.
      private void writeObject(ObjectOutputStream s) throws IOException {
!         Vector<Object> values = new Vector<Object>();
  
          s.defaultWriteObject();
          // Save the root, if its Serializable.
          if(root != null && root instanceof Serializable) {
              values.addElement("root");