Jar creation and usage problem

I have a jar file which contains 60 files. This jar actually consists of 2 files which are not needed anymore. Using this jar as is is working fine. But when I am removing these files and creating the jar it is giving problem at runtime in screens where this library is used.

Please tell me how is it possible or what could be the reason behind this problem.

Thanks in advance.

[396 byte] By [Ajoya] at [2007-11-15]