I've just added a simple SingletonIterator class to the collections package
together with a JUnit test case to ensure it works properly.
It essentially provides an Iterator interfaces over a single object. I've
found this simple class suprisingly useful when working with the Java
Collections Framework and have ended up with implementations of this class
in various projects. Now I think the collections package has most
iterator-adapters covered: singleton object, array or enumeration.
James
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