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what r JAR files in java

 
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what r JAR files in java.how r they used.can any one explain.
thanks and regards,
ravi
 
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JAR stands for Java ARchive. It is a way to pack a bunch of your class files together. This helps in distributing packages to users, and helps applets, since the browser only needs to download one JAR file as opposed to how ever many class files you need.

Here is a link to a reference on how to use JAR files :
http://developer.java.sun.com/developer/Books/JAR/index.html

HTH,
-Nate
 
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