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An output stream that writes bytes to a file. If the output file exists, it can
be replaced or appen
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A controller for the selection of SelectableChannel objects. Selectable channels
can be registered w
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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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General IO stream manipulation utilities. This class provides static utility
methods for input/outpu
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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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