> -----Original Message-----
> From: Craig R. McClanahan [mailto:[EMAIL PROTECTED]
>
>
> An InvocationTargetException normally means that the method you told
> Digester to call via reflection (here, the add() method on your
> ActionConstraint class) threw an exception. Is there anything in your
> add() method that might cause this on the second invocation?
That's makes sense since the root cause was a ClassCastException. ActionConstraint is
an extension of TreeSet and I did not override add().
Here's the root cause:
Caused by: java.lang.ClassCastException: mil.usaf.rad.dpart.struts.Group
at java.util.TreeMap.compare(TreeMap.java:1081)
at java.util.TreeMap.put(TreeMap.java:459)
at java.util.TreeSet.add(TreeSet.java:205)
Does this mean that Group needs to implement Comparable?
I solved my problem by changing ActionConstraint to extend HashSet.
>
> Craig
>
Dave
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