Zip jar

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What is .jar?

Name: Java Archive File
Extension: .jar
Format: Binary
Category: Developer
Developer: Oracle
Description: A JAR file is a Java archive (JAR) file used by the Java Runtime Environment (JRE), a framework used for executing Java programs. JAR files may serve as program libraries or as standalone programs that run if the JRE is installed on the computer or mobile device.
MIME Type: application/java-archive
Wikipedia: .jar on Wikipedia

Last updated October 3, 2026