Some times we need to see code written in java class file i.e. *.class file but it is not very easy using command line. After using many techniques and tools i found a perfect tool i.e. Java Decompiler for decompile class file using graphical interface.
You can decompile class file OR jar file without any limitation. See original code written in class file with a single click. This is an Open Source software, you can download it for free.
Download it for any platform like Windows, Linux and Macintosh.
This tool also available as plugin for Eclipse and IntelliJ. Good thing is that you can decompile class file without installing or downloading this software using Preview feature. Just drag and drop your class file and see your code written in class file.