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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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Note: Do not use this class since it is obsolete. Please use the Map interface
for new implementatio
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GregorianCalendar is a concrete subclass of Calendarand provides the standard
calendar used by most
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Patterns are compiled regular expressions. In many cases, convenience methods
such as String#matches
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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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