The following response was provided in a post by John Meyers:
I fixed a struts error recently because of changes in the Introspector class from JDK 1.3.1_08 and above. The error looks something like this
java.lang.IllegalArgumentException: Property 'displayContracts' is not indexed
The solution is to change the struts tag from something like
bean.displayContracts['counter'].property
to
bean.indexedDisplayContracts['counter'].property
The corresponding bean should have an indexed getter and setter like below
Type getIndexed<type>(int index)
void setIndexed<type>(int index, Type T)
I just chose to add the word "indexed". It is not necessary to follow that format. The indexed getters and setters should return a type based on the index passed and the the classic getters and setters can be retained to access the variable in a normal way. This way you can access the variable with both the classic getters and the indexed getters thus solving the problem. Just posting to let others know how to solve this. For more information
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4926813
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