src/java.desktop/share/classes/java/awt/Container.java

@@ -38,10 +38,11 @@
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 import java.io.ObjectStreamField;
 import java.io.PrintStream;
 import java.io.PrintWriter;
+import java.io.Serializable;
 
 import java.lang.ref.WeakReference;
 import java.security.AccessController;
 
 import java.util.ArrayList;

@@ -3847,11 +3848,13 @@
          * Fire {@code PropertyChange} listener, if one is registered,
          * when children are added or removed.
          * @since 1.3
          */
         protected class AccessibleContainerHandler
-            implements ContainerListener {
+            implements ContainerListener, Serializable {
+            private static final long serialVersionUID = -480855353991814677L;
+
             public void componentAdded(ContainerEvent e) {
                 Component c = e.getChild();
                 if (c != null && c instanceof Accessible) {
                     AccessibleAWTContainer.this.firePropertyChange(
                         AccessibleContext.ACCESSIBLE_CHILD_PROPERTY,