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ArrayList is an implementation of List, backed by an array. All optional
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A linear collection that supports element insertion and removal at both ends.
The name deque is shor
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A Properties object is a Hashtable where the keys and values must be Strings.
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Walk the nodes of the tree left-to-right or right-to-left. Note that in
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Central representation of an Ant project. This class defines an Ant project with
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