--- a/jdk/src/share/classes/javax/swing/MutableComboBoxModel.java	Fri Apr 29 16:03:09 2011 -0700
+++ b/jdk/src/share/classes/javax/swing/MutableComboBoxModel.java	Wed May 04 10:20:14 2011 +0400
@@ -27,19 +27,21 @@
 /**
  * A mutable version of <code>ComboBoxModel</code>.
  *
+ * @param <E> the type of the elements of this model
+ *
  * @author Tom Santos
  */
 
-public interface MutableComboBoxModel extends ComboBoxModel {
+public interface MutableComboBoxModel<E> extends ComboBoxModel<E> {
 
     /**
      * Adds an item at the end of the model. The implementation of this method
      * should notify all registered <code>ListDataListener</code>s that the
      * item has been added.
      *
-     * @param obj the <code>Object</code> to be added
+     * @param item the item to be added
      */
-    public void addElement( Object obj );
+    public void addElement( E item );
 
     /**
      * Removes an item from the model. The implementation of this method should
@@ -55,17 +57,17 @@
      * should notify all registered <code>ListDataListener</code>s that the
      * item has been added.
      *
-     * @param obj  the <code>Object</code> to be added
+     * @param item  the item to be added
      * @param index  location to add the object
      */
-    public void insertElementAt( Object obj, int index );
+    public void insertElementAt( E item, int index );
 
     /**
      * Removes an item at a specific index. The implementation of this method
      * should notify all registered <code>ListDataListener</code>s that the
      * item has been removed.
      *
-     * @param index  location of object to be removed
+     * @param index  location of the item to be removed
      */
     public void removeElementAt( int index );
 }