Creating jar file

[Heather]

I want to create a jar file named onlyjar.jar where I'm using other jar files like util1.jar,util2.jar etc.
My problem is how to create a jar with all these together ???

[Ed]

Simply, you can't. Your util1.jar etc. should be separate jar files.

[JavaBean]

You can extract all these JAR files into one directory with Winzip/Winrar and re-create the jar file by zipping all these content together and renaming the file extension.

But make sure your action is valid for the license of these libraries and make sure the manifest file contains all necessary lines for all of the manifest files of these jars.