CFCatch Java Exceptions

June 12, 2009
coldfusionjava

Did you know that you can catch java exceptions by class name with cfcatch? It's not documented on the cfcatch tag documentation (as of CF8), but it works... Here's an example:

<cftry>
 	<cfset list = CreateObject("java", "java.util.LinkedList")>
 	<cfset list.get(5)>
 	<cfcatch type="java.lang.IndexOutOfBoundsException">
  		Index outta bounds
 	</cfcatch>
</cftry>

There is one special exception that Mark Mandel has blogged about, and that is if the exception is caused by a class that was loaded by a different classloader, cfcatch won't be able to catch it by type. Perhaps that's why this feature is undocumented?



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