Loading libraries

Question

I've created a game library which I store all my common game classes in, when I compile a lone game and have the lib on my classpath It's ok, but when I run I get:
Exception in thread "main" java.lang.NoClassDefFoundError: library/games/Other
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
at mud.shared.Screen.<clinit>(Screen.java:11)
I use
java -jar game.jar ; lib.jar
to run it
I hope I have explained enough, there are too many details to list them all
Shish

Answer 1

PS: it is very inconvinient to cut & paste the classes from lib.jar to game.jar for every program because :
1 it takes lots of time
2 when I give out the games, it increases the jar file size and most classes are just unnecessarry duplicates.
Shish