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Provides access to system-related information and resources including standard
input and output. Ena
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This class consists exclusively of static methods that operate on or return
collections. It contains
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Note: Do not use this class since it is obsolete. Please use the Map interface
for new implementatio
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Doubly-linked list implementation of the List and Dequeinterfaces. Implements
all optional list oper
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SortedSet is a Set which iterates over its elements in a sorted order. The order
is determined eithe
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An Executor that provides methods to manage termination and methods that can
produce a Future for tr
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