.JAR - File Extension for Java Archive Files
File extension JAR is used for Java archive files. A JAR sample file is provided. Free software for creating and opening JAR files are listed.
File Extension: .JAR
MIME Type: application/java-archive
File Content: Compressed files
What is JAR? JAR is a short name for Java ARchive, a file format used to archiving Java class files and associated metadata. JAR was developed by Sun Microsystems by extending the ZIP file format.
Some technical notes on JAR file format:
JAR is the file extension for JAR files.
JAR files are binary files. Here are the first 64 bytes of a sample JAR file dumped in HEX values:
50 4b 03 04 14 00 08 00 08 00 90 b8 24 38 00 00 PK...........8.. 00 00 00 00 00 00 00 00 00 00 0d 00 04 00 57 65 ..............We 6c 63 6f 6d 65 2e 63 6c 61 73 73 fe ca 00 00 6d lcome.class....m 50 c1 4a c3 40 10 7d d3 24 4d 1b a3 ad ad ad 56 P.J......M.....V
Notice that JAR files share the same magic number, "PK", with ZIP files.
JAR sample file: Click sample.jar to download.
JAR files can be created and unpacked by many free compression software:
2012-07-02, 5672👍, 0💬
What is MPP? MPP, short name for Microsoft Project Plan, is used as the file extension for Microsoft...
What is XPS or OXPS? XPS stands for for XML Paper Specification. OXPS stands for for Open XML Paper ...
What is DOTX? DOTX, short name for Document Template XML, is used as the file extension for files in...
Karaoke files storing MIDI music messages and synchronized lyrics to play on Karaoke machines. A KAR...
What is DLM? DLM, short name for Dictation Language Model, is used as the file extension for Dictati...