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Java Executable Editors & Patchers


Tool name: Javassist
Rating: 5.0 (1 vote)
Author: Shigeru Chiba                        
Website: http://www.csg.is.titech.ac.jp/~chiba/javassist/
Current version: 3.12.0.GA
Last updated: April 16, 2010
Direct D/L link: N/A
License type: Free
Description: Javassist (Java Programming Assistant) makes Java bytecode manipulation simple. It is a class library for editing bytecodes in Java; it enables Java programs to define a new class at runtime and to modify a class file when the JVM loads it. Unlike other similar bytecode editors, Javassist provides two levels of API: source level and bytecode level. If the users use the source-level API, they can edit a class file without knowledge of the specifications of the Java bytecode. The whole API is designed with only the vocabulary of the Java language. You can even specify inserted bytecode in the form of source text; Javassist compiles it on the fly. On the other hand, the bytecode-level API allows the users to directly edit a class file as other editors.

Aspect Oriented Programming: Javassist can be a good tool for adding new methods into a class and for inserting before/after/around advice at the both caller and callee sides.

Reflection: One of applications of Javassist is runtime reflection; Javassist enables Java programs to use a metaobject that controls method calls on base-level objects. No specialized compiler or virtual machine are needed.
Also listed in: Java Code Injection Tools
More details: Click here for more details, screenshots, related URLs & comments for this tool! (or to update its entry)



Tool name: dirtyJOE
Rating: 0.0 (0 votes)
Author: ReWolf                        
Website: http://dirty-joe.com
Current version: 1.6 (c472)
Last updated: November 28, 2013
Direct D/L link: http://dirty-joe.com/bin/rewolf_dirtyjoe_v1.6_(c472)_x86.zip
License type: Free
Description: dirtyJOE - Java Overall Editor is a complex editor and viewer for compiled java binaries (.class files).

dirtyJOE is free for non-commercial use.
dirtyJOE is entirely written in C++.
dirtyJOE is using Python library as a script engine.

Main features:
* Viewer for: constant pool, methods, fields, attributes
* Editor for: constant pool, bytecode, file header, attributes
* Python scripting for encrypted strings
Also listed in: Java Tools
More details: Click here for more details, screenshots, related URLs & comments for this tool! (or to update its entry)


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