Uses of Class
java.util.jar.JarFile

Packages that use JarFile 
Package Description
java.lang.instrument
Provides services that allow Java programming language agents to instrument programs running on the JVM.
java.net
Provides the classes for implementing networking applications.
java.util.jar
Provides classes for reading and writing the JAR (Java ARchive) file format, which is based on the standard ZIP file format with an optional manifest file.