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An output stream that writes bytes to a file. If the output file exists, it can
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A writable sink for bytes.Most clients will use output streams that write data
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A connection to a URL for reading or writing. For HTTP connections, see
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Legacy security code; do not use.
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A counting semaphore. Conceptually, a semaphore maintains a set of permits. Each
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A generic Abstract Window Toolkit(AWT) container object is a component that can
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