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Collection is the root of the collection hierarchy. It defines operations on
data collections and t
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An iterator over a sequence of objects, such as a collection.If a collection has
been changed since
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Walk the nodes of the tree left-to-right or right-to-left. Note that in
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Factory and utility methods for Executor, ExecutorService,
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Provides an abstract class to be subclassed to create an HTTP servlet suitable
for a Web site. A sub
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