importing external packages

Hi all,
I need to include external libraries into 'src.jar'... I tried extracting the original one, copying all those libraries into the extracted one and then converting into src.jar again..But this didint work... so please suggest me the right way of accomplishing this task...any help would be great

Do you want to add a jar file inside another jar file, is it? If so how those two jar files are connected?

I've got it finally...I just set the class path variable to the external
package which i was supposed to import..and it worked

That sounds better...