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Return the contained value, if present, otherwise throw an exception to be
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Calendar is an abstract base class for converting between a Date object and a
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An int value that may be updated atomically. See the java.util.concurrent.atomic
package specificati
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Patterns are compiled regular expressions. In many cases, convenience methods
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This class provides access to implementations of cryptographic ciphers for
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A Window object is a top-level window with no borders and no menubar. The
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