Java 9 Obfuscators?

Remi Forax forax at
Fri Sep 9 16:05:30 UTC 2016

Hi Eric,
ASM has a support for obfuscation (ClassRemapper [1]) and the version 6 also support Java 9
(currently the branch ASM_6_FUTURE support the new classfile encoding used by the betas of jdk-9-jigsaw while asm6-alpha [2] support the old classfile encoding currently used by the betas of jdk-9)

The ClassRemapper API allows you to rename class name, type, etc.
The support for Java 9 adds ways to rename a package name and a module name.
This API is not per see an obfuscator, you have to code what should be renamed or not.


[2] available here:

----- Mail original -----
> De: "Eric Johnson" <eric at>
> À: "jigsaw-dev" <jigsaw-dev at>
> Envoyé: Vendredi 9 Septembre 2016 17:44:40
> Objet: Java 9 Obfuscators?

> Anyone aware of byte-code obfuscators already working with Java 9?
> How does modularization interact with obfuscation?
> Eric.

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