Deployment Issues, Different Jars for Diff Java in one application.

Question

HI,
I need to put classpath (Jars) for my WEB-INF/classes. Different Jars for Diff files in one application.
The problem is , for one ofmy application, the lib files are x.jar and y.jar , x is older than y but have same
lib files. in x and y, there is one class , r.java , which have a method method1(). whey they are doing modifications in y.jar , the r.java has changed to new vertion, the method method1() they re-written the body.
My application have 5 java files, in which 2 files uses r.java imported from the x.jar earlier.
Now we need to use y.jar because , the y.jar have more files added with good futures. But the earlier 2 files are giving exception if i use y.jar.
I need solution for this. how can i put classpath for the 2 files to use the x.jar and other files to use y.jar in the same application.
I am using a Tomcat 4 server. only Servlets, JSPs I am using.
Thank you,
Kiran

Answer 1

I may be missing something here, is y.jar a newer version of x.jar? And if it is do you need x.jar at all? Are there classes in x.jar that do not exist in y.jar? Can you modify your application to provide the same functionality and only use y.jar?