(AndroChefJavaDecompiler is a green cracking commercial decompilator software. It costs $25 and works well. It has different advantages from jd gui. Students who need it can download the advantages: 1) It is simple to use, and the source code can be obtained by APK in one step without the need of dex2jar conversion. 2) Decompiling code standards do not require optimization. The code that cannot be decompiled directly outputs error messages, Unlike jd gui, it often generates garbage code that seems to be usable but is actually unusable. 3) It is good to manage loop nesting. Faults: 1) It is not as powerful as native jad decompilation. Some classes cannot be decompiled, and you have to rely on the original jad)