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Return the contained value, if present, otherwise throw an exception to be
created by the provided s
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Allows reading from and writing to a file in a random-access manner. This is
different from the uni-
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HashMap is an implementation of Map. All optional operations are supported.All
elements are permitte
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Factory and utility methods for Executor, ExecutorService,
ScheduledExecutorService, ThreadFactory,
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A generic Abstract Window Toolkit(AWT) container object is a component that can
contain other AWT co
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The GridLayout class is a layout manager that lays out a container's components
in a rectangular gri
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