How to decompile class files

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Computer Sci. Computer Architecture. Java decompilation how to convert bytecode to source code Hindi. How do I "decompile" Java class files? Decompiling Classes in Java Baeldung Free www. How to decompile class file in Java and Eclipse Java decompiler online Hot www. Best www. Java Decompiler Top java-decompiler. How to decompile Java class files? Popular blog. Add a comment. To see Java source code check some decompiler. Go search for jad. If you want to see bytecodes, just use javap which comes with the JDK.

Marko Marko I'd recommend one of the open-source decompilers instead, as they are actively developed. I'll be keeping my eye on this one. Also actively developed with support for the latest Java features.

Krakatau Takes a different approach in that it tries to output equivalent Java code instead of trying to reconstruct the original source, which has the potential of making it better for obfuscated code.

From my testing it was roughly on par with Procyon, but still nice to have something different. I did have to use the -skip command-line flag so it wouldn't stop on errors.

Actively developed, and interestingly enough it's written in Python. Doesn't seem to be open source and development seems sporadic. JAD Worked, but only supports Java 1.

Also available as an Eclipse plugin. No longer under development. I use JAD Decompiler. Janus Troelsen Janus Troelsen Quinn Taylor Quinn Taylor 44k 16 16 gold badges silver badges bronze badges. Do you know how to decompile a concrete class file with Soot? I'm not sure it's possible G Kumar G Kumar 1 1 silver badge 2 2 bronze badges. Cimbali Andrew Rukin Andrew Rukin 11 11 silver badges 16 16 bronze badges.

Procyon works best!!!! Atanas 9 2 2 bronze badges. Mike Pone Mike Pone John Meagher John Meagher Take a look at cavaj. Paulo Guedes Paulo Guedes 6, 5 5 gold badges 39 39 silver badges 58 58 bronze badges. That also uses jad underneath. JAD is one that works and is simple. Also, if you just want to see the methods, use javap. Berlin Brown Berlin Brown Once You have successfully extracted the contents of the JAR file, you will get a lot of files with file extension ".

JD stands for " Java Decompiler ". It is a standalone graphical utility that displays Java source codes of. You can browse the reconstructed source code with the JD-GUI for instant access to methods and fields. Here, our package is " bruteCUI " and then we get a list of ". Now click on any class file to view its contents:.

You can view the contents and any class files and understand how exactly the java program was coded by the developer. This technique can be used to reverse engineer or to decompile any JAR file. As usual, the order in which the x and f options appear in the command doesn't matter, but there must not be a space between them.