problem with running jar file

[oriakhi joseph]

i converted my class file to .jar file but when i double click on the file its does not run, gives an error: a java exception has occured, when trying to open it with the jvm

[Ankit Garg]

How did you convert your class in .jar file? Does your class contain a main method and did you include a MANIFEST.MF file in the jar to tell the JVM which class to invoke when the jar file is run?

[oriakhi joseph]

yes my class contains a main method, and i used this command : jar cvf Sample.jar*.class , please help me out , i dont know of the manifest file

[Kaydell Leavitt]

You can look inside of you .jar file by changing the extension from .jar to .zip and then unzipping the file and looking into it.

[Ankit Garg]

oriakhi you can read about manifest files here. You'll specifically need to do this...