I am new to J2EE technology and currently I am working on a project where client has sent his old code and some exe files etc in .ear and .jar jave file formats, some .ear files contain .war files also inside them. Now i want to work on these bundles of codes and files and lay novice about the commands needed to get started with them. I know how to deploy .jar files from the command prompt (drive:> java -jar xx.jar) is all i know. Can anyone be helpful taking me further along with other file formats as well ie .ear and .war files. I need to know how to execute or extract or make them work from the command prompt as well as other utilities if both are the cases those could be used. Plz can anyone help me out telling commands in here and giving some good related links. I couldnt land up to any worth while through google.