Index: javax/swing/JTree.java
===================================================================
RCS file: /cvsroot/classpath/classpath/javax/swing/JTree.java,v
retrieving revision 1.34
diff -u -r1.34 JTree.java
--- javax/swing/JTree.java	15 Aug 2005 18:30:58 -0000	1.34
+++ javax/swing/JTree.java	2 Sep 2005 14:45:19 -0000
@@ -570,7 +570,7 @@
 	 */
 	public Dimension getPreferredScrollableViewportSize()
 	{
-		return null;
+	  return new Dimension (getPreferredSize().width, getVisibleRowCount()*getRowHeight());
 	}
 
 	public int getScrollableUnitIncrement(Rectangle visibleRect,