How secure my Executable jar file

Question

I developed a desktop application in Java. I converted my code in the form of Executable jar (.jar) format. Here my problem is, this jar files easily extracted by winrar/winzip. My Java class files are visible to others and also i do De-compilation process using JAD my source code are visible to everyone. is any way to protect my source code from De-compileation process.

You can obfuscate method names and the code, but you can't really prevent decompilation. — thejh, Nov 01 '11 at 09:42
possible duplicate of [How to encrypt a .jar file](http://stackoverflow.com/questions/7187883/how-to-encrypt-a-jar-file) — A.H., Nov 01 '11 at 09:43
Duplicate?.. please refer this also http://stackoverflow.com/questions/49379/how-to-lock-compiled-java-classes-to-prevent-decompilation — Kris, Nov 01 '11 at 09:49

score 3 · Accepted Answer · answered Nov 01 '11 at 09:42

3

You can't 100% stop decompilation but you can obfuscate your code that will be hard to read once after decompilation

answered Nov 01 '11 at 09:42

jmj

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Thanks Jigar Joshi,I'm new to this any reference for "Obfuscate" – Aerrow Nov 01 '11 at 09:44

score 1 · Answer 2 · answered Oct 16 '12 at 17:28

As Jigar Joshi said you can obfuscate your jar file. Proguard is a good one. Here's the link to it. http://java-source.net/open-source/obfuscators. Alternately you can convert jar to exe using jar to exe converter. You can download it here. But you have to purchase it. http://www.regexlab.com/en/jar2exe/.

score 0 · Answer 3 · answered Jun 06 '17 at 09:12

Put a password or licence check at start of application. With proper authentication, only user must be able to run the application further.

For password check, you should generate private-public key concepts. For licence, some installed software or attached hardware can be use to provide access.

How secure my Executable jar file

3 Answers3