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Uses a one-way hash function to turn an arbitrary number of bytes into a
fixed-length byte sequence.
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A linear collection that supports element insertion and removal at both ends.
The name deque is shor
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An iterator over a sequence of objects, such as a collection.If a collection has
been changed since
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General IO stream manipulation utilities. This class provides static utility
methods for input/outpu
- Logger (org.apache.log4j)
This is the central class in the log4j package. Most logging operations, except
configuration, are d
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The GridBagLayout class is a flexible layout manager that aligns components
vertically and horizonta
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