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- SecureRandom (java.security)
This class generates cryptographically secure pseudo-random numbers. It is best
to invoke SecureRand
- HashMap (java.util)
HashMap is an implementation of Map. All optional operations are supported.All
elements are permitte
- JarFile (java.util.jar)
JarFile is used to read jar entries and their associated data from jar files.
- Logger (org.apache.log4j)
This is the central class in the log4j package. Most logging operations, except
configuration, are d
- IsNull (org.hamcrest.core)
Is the value null?
- FlowLayout (java.awt)
A flow layout arranges components in a left-to-right flow, much like lines of
text in a paragraph. F
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