jdk/src/share/classes/javax/swing/tree/DefaultMutableTreeNode.java

@@ -24,10 +24,11 @@
  */
 
 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.*;
 
 
 /**

@@ -213,10 +214,11 @@
      * reassign a child's parent, it should not be messaged from anywhere
      * else.
      *
      * @param   newParent       this node's new parent
      */
+    @Transient
     public void setParent(MutableTreeNode newParent) {
         parent = newParent;
     }
 
     /**