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A Java interface (as seen on previous slide)
A Java class that defines auxiliary methods, notably narrow(), which is the CORBA counterpart of Java casting. The class is called ---Helper, where --- is your application name.
A Java class which defines methods for setting and getting the values of holders. Holders are required for CORBA operations that take out or inout arguments, which, unlike CORBA in arguments don’t map directly to Java’s call-by-value semantics.
The _example_---, a template class for the implementation.