Java Programming

Hello,

I'm trying to find a regular expression that will match any file URI in the WEB-INF/lib directory and the jars within it except a couple of specific jars, let's say a.jar and b.jar.

For instance, I'd like the expression to match WEB-INF/lib/c.jar/myClass.class and WEB-INF/lib/d.jar/myClass.class but not any file inside and including the WEB-INF/lib/a.jar and WEB-INF/lib/b.jar

From what I understand so far, it would be ideal if I could somehow group a literal string "a.jar" and "b.jar" into two distinct entities, E1 and E2 and use negation brackets to something of the effect WEB-INF/lib/[^E1E2].* which would match everything that begins with WEB-INF/lib except those strings directly followed by E1 and E2, a.jar and b.jar respectively.

Is there a way to do this?