diff -r 1ef89a94ad93 -r 24b6c30fbf71 src/share/classes/sun/util/xml/PrefsXmlSupport.java
--- a/src/share/classes/sun/util/xml/PrefsXmlSupport.java	Wed Jun 24 13:44:46 2009 +0200
+++ b/src/share/classes/sun/util/xml/PrefsXmlSupport.java	Wed Jun 24 17:29:29 2009 +0200
@@ -40,7 +40,7 @@
 public abstract class PrefsXmlSupport {
     public static PrefsXmlSupport getDefault() {
         Iterator<PrefsXmlSupport> it = ServiceLoader.load(PrefsXmlSupport.class).iterator();
-        return it.hasNext() ? it.next() : null /* JST-XXX: some default */;
+        return it.hasNext() ? it.next() : new DefaultPrefsXmlSupport();
     }
 
     public abstract void export(OutputStream os, final Preferences p, boolean subTree)