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A connection to a URL for reading or writing. For HTTP connections, see
HttpURLConnection for docume
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This class provides methods that return pseudo-random values.It is dangerous to
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General IO stream manipulation utilities. This class provides static utility
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Operations on java.lang.String that arenull safe.
* IsEmpty/IsBlank - checks if a String contains
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A border layout lays out a container, arranging and resizing its components to
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