What is a jar File and How to Open It?

a.jar file is a compressed form of Java file (jar is Java Archive).  You will need Java Runtime Environemnt to execute this file. To download and install Java you can follow this link: Download Java Runtime Environment.

.jar file opener

If you only need to view what is inside jar file, you can use a standard compression program such as Winzip or 7zip.

how to run .jar files

One you have JRE installed you can double click the jar file to run it (if the jar is executable) if not then you can use winzip or 7 zip to see what i sinside the file.

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