Extracting the Contents of a JAR File
The basic command to use for extracting the contents of a JAR file is:
jar xf jar-file [archived-file(s)]
Suppose you want to extract the TicTacToe class file and the cross.gif image file. To do so, you can use this command:
jar xf TicTacToe.jar TicTacToe.class images/cross.gif
now you want to extract the TicTacToe all file to the current directory
jar xf TicTacToe.jar
