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A specialized Writer that writes to a file in the file system. All write
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A readable source of bytes.Most clients will use input streams that read data
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This class provides methods that return pseudo-random values.It is dangerous to
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A plug-in replacement for JDK1.5 java.util.concurrent.ConcurrentHashMap. This
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An object that executes submitted Runnable tasks. This interface provides a way
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Factory and utility methods for Executor, ExecutorService,
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