File formats and extensions alphabetically ordered

JAR file extension

You can open file with JAR using special software abopted to do this. In order to open JAR file download one of the software.

How to open JAR file

JAR Icon
File type:
Java Archive File
Developer:
Oracle
Category:
Executable files

Java Runtime Environment (JRE - a framework that is used to run Java applications) Java Archive (JAR) file with CLASS files, program resources and optional manifest file (located in META-INF/MANIFEST.MF). This file can be used as an application library or as a standalone application that executes if the JRE is installed in the system. JAR files are compressed with ZIP compression and can be digitally signed with the "jarsigner" utility provided with the Java SDK. They can be generated using the jar utility and accessed with Java "java.util.jar" API. Such programs as Mozilla Firefox, Thunderbird, SeaMonkey and Sunbird use JAR files for saving themes and plug-ins.

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