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Return the contained value, if present, otherwise throw an exception to be
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A specialized Writer that writes to a file in the file system. All write
requests made by calling me
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Locale represents a language/country/variant combination. Locales are used to
alter the presentatio
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Vector is an implementation of List, backed by an array and synchronized. All
optional operations in
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An object that executes submitted Runnable tasks. This interface provides a way
of decoupling task s
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Operations on java.lang.String that arenull safe.
* IsEmpty/IsBlank - checks if a String contains
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The BufferedImage subclass describes an java.awt.Image with an accessible buffer
of image data. All
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