--- old/jdk/src/share/classes/javax/swing/tree/DefaultMutableTreeNode.java	2013-11-06 20:52:48.806306200 +0400
+++ new/jdk/src/share/classes/javax/swing/tree/DefaultMutableTreeNode.java	2013-11-06 20:52:48.271275600 +0400
@@ -26,6 +26,7 @@
 package javax.swing.tree;
    // ISSUE: this class depends on nothing in AWT -- move to java.util?
 
+import java.beans.Transient;
 import java.io.*;
 import java.util.*;
 
@@ -215,6 +216,7 @@
      *
      * @param   newParent       this node's new parent
      */
+    @Transient
     public void setParent(MutableTreeNode newParent) {
         parent = newParent;
     }