Monday, February 20, 2012

JAR to JAVA converter

I went through many websites,but i did not find any converter for jar file to .java files at one go.
So, I thought of writing a script for this conversion. This script also keeps the package structure same as in the jar file

Following are the prerequisites
  • This is restricted to windows platform
  • Unzip utility should be installed in the system
  • jad decompiler should be installed.
    If you don't have jad installed, you can find from the following link
    click here to download
  • Unzip the downlaoded in step2,set the jad.exe in the systems path variable.
  • Run the command prompt in the administrator mode

Steps to run the batch file
  • cd "path to which batch file is placed"
  • jar2java.bat "jar file name/jar file path with jar file name"
  • Note: Give jar file name without extension
Download the batch file from here

Note:Remove the extention .txt to make it .bat file.

Step 1) >cd D:\jartojava (Copy the above downloaded batch file in this folder)
Step 2) jartojava> jar2java.bat abc (copy abc.jar in this folder)
Here a folder named abc is created with all the java files found in abc.jar.


  1. Alert!: Oracle has announced their marquee event JavaOne and Oracle Develop 2012 being held in Hyderabad on 3-4 May. Registrations have also started (Link: ).

  2. You can use this tool:
    AndroChef successfully decompiles obfuscated Java 6 and Java 7 .class and .jar files. It is simple but powerful tool that allows you to decompile Java and Dalvik bytecode (DEX, APK) into readable Java source.

  3. I have read your blog its very attractive and impressive. I like it your blog.

    Java Training in Chennai Core Java Training in Chennai Core Java Training in Chennai

    Java Online Training Java Online Training Core Java 8 Training in Chennai Core java 8 online training JavaEE Training in Chennai Java EE Training in Chennai