What is Java Jar file(.Jar)

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It is acronomy of Java Archive File based on famous zip file format

It  used to pack together so many related file into single file

It consists of Java class files, metadata, and other related resources

It  makes easy sharing of Java classes and libraries

It  assists efficient deployment of Java application, Java applet , and plug-ins 

It gives security,versioning, portability, quick downloadable and so on.

It can be understood by JVM and Java compiler

The Java developers can digitally sign for authentication



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