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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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A BufferedInputStream adds functionality to another input stream-namely, the
ability to buffer the i
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A thread is a thread of execution in a program. The Java Virtual Machine allows
an application to ha
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A connection to a URL for reading or writing. For HTTP connections, see
HttpURLConnection for docume
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A reentrant mutual exclusion Lock with the same basic behavior and semantics as
the implicit monitor
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The GridBagLayout class is a flexible layout manager that aligns components
vertically and horizonta
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A filter is an object that performs filtering tasks on either the request to a
resource (a servlet o
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