The jar utility has no default graphically interface, so you will have to interact with it using a command line or dos window. Open a dos window ( command.exe ) using the start/run and launching a dos window. In this dos window you can execute the jar.exe utility without arguments, it will complain by showing you the basic arguments available. Some of these are as follows:

• x = extract
  
• t = table of contents
  
• f = use next argument as filename
  
• v = verbose
  
• c = create
  

A sample of what your command line will probably need to look like is as follows:

• jar xf thefile.jar
  
  extracts contents of the named jar file relative to current directory
  
  
  
• jar tf thefile.jar
  
  Show a Table of contents from the named jar file
  
  
  

WinZip.exe also works on jar files for a nice graphically interface for a windows environment for extracting and examining the contents of a .jar file.