How do I decompile a Java class?

In order to decompile class file, just open any of your Java projects and go to Maven dependencies of libraries to see the jar files included in your project. Just expand any jar file for which you don’t have the source attached in Eclipse and click on the . class file.

How do you use CFR decompiler?

CFR – another java decompiler To use, simply run the specific version jar, with the class name(s) you want to decompile (either as a path to a class file, or as a fully qualified classname on your classpath).

How does Java decompiler work?

A disassembler takes this binary code and translates it into a text representation. This translation is usually 1-to-1, meaning one instruction is shown as one line of text. This task is complex, but straightforward, the program just needs to know all the different instructions and how they are represented in a binary.

What is Java decompiler GUI?

The “Java Decompiler project” aims to develop tools in order to decompile and analyze Java 5 “byte code” and the later versions. JD-GUI is a standalone graphical utility that displays Java source codes of “. class” files. JD-Core may be used to recover lost source code and explore the source of Java runtime libraries.

What is the best java decompiler?

9 best Java Decompiler to be used

  • 1) JD Project. JD Project is one of the most frequently used best java decompiler offline.
  • 2) Cavaj Java Decompiler.
  • 3) DJ Java Decompiler.
  • 4) JBVD.
  • 5) AndroChef Java Decompiler.
  • 6) Procyon.
  • 7) CFR Decompiler.
  • 8) FernFlower.

Can we get java file from class file?

You can use any of the java decompiler utility for this. There are a couple of few good utilities available over the internet, e.g., JD decompiler, you can also look for the eclipse plugin as well for the same. To view java content from . class files many decompilers are available.

Can we convert class file to Java file?

Disassemble a class file using javap command So there are many decompilers available which convert a . class file into a . java file.

Can we convert class file into Java file?

Which is the Best offline Java Decompiler?

Java Decompiler Project. The Java Decompiler project was developed primarily to decompile bytecode for Java 5 and other later versions.

  • Cavaj Java Decompiler. Java’s Cavaj Decompiler is a freeware that does not require Java to be installed to decompile a file.
  • Procyon Java Decompiler.
  • DJ Java Decompiler.
  • AndroChef Java Decompiler.
  • CFR Java Decompiler.
  • Is there a way to decompile the Java class?


  • Extract the zip file and get jad.exe.
  • Create a .java file ( in the same folder in which you have extracted the zip file.
  • Compile and run the .java file.
  • Now move the .class file and jad application to another folder.
  • Can I run Jalview from the command line?

    Jalview can be run from the command line, and provides a range of arguments. These arguments can also be passed via .JVL files, which are opened automatically by the Jalview application when double-clicked in a file browser on Windows and OSX. The way that you launch Jalview from the command line depends on the platform you are on, and how it has been installed.

    What is JD GUI?

    JD-GUI is a standalone graphical utility that displays Java source codes of “.class” files. You can browse the reconstructed source code with the JD-GUI for Instant Access to methods and fields.