Possible Duplicate:
Can you configure Windows to open JAR files like ZIP files without a 3rd party tool?

How i can view the contents of Jar files and enter to it like Zip files on windows 7 , so windows explorer can view these files ?

marked as duplicate by studiohack Dec 14 '11 at 7:49

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.


Try this registry script:

Windows Registry Editor Version 5.00
  • For more information about this apparently undocumented @ symbol, don't bother with the official MS docs, because it's not mentioned there. support.microsoft.com/en-us/kb/310516 Apparently it refers to the Data field of the (Default) key. – jordanpg May 4 '15 at 16:50

Jar (=Java Archive) are just zipped Java class files, so you can use any Zip-Archiver tool to unzip it, for example 7-zip.

It won't bring you much, however, because class files are the files compiled into bytecode, so this is a binary format you cannot easily look in. You can decompile these files using some of existing Java decompilers, for example this one.


Open them with 7-zip. If you really want to double click, set it as default program for .jar files.

  • I do it but it gives me an error message "failed to load main-class manifest attribute " when i opens the file – Hamzah khammash Dec 14 '11 at 7:43
  • -1. This guy wanted Explorer integration. – kinokijuf Dec 14 '11 at 7:44

Not the answer you're looking for? Browse other questions tagged or ask your own question.