在可执行jar中使用非可执行jar中的类

Question

I am trying to uses classes from a non executable jar called noexec.jar in an executable jar called exec.jar . With no defined manifest in the nonexec jar and a manifest in the exec jar. The folder structure where the jars are held look like so.

ROOT
 /lib
 |
  ---nonexec.jar
  ---exec.jar

With the class path defined in the manifest for the executable jar as Class-Path: nonexec.jar such as in this java link . However every time I run java -jar exec.jar , I get Exception in thread "main" java.lang.NoClassDefFoundError: helper . Does anyone what even though I am including nonexec in my class path why the classes contained within the jar are not being found?

EDIT: This is the manifest file

Manifest-Version: 1.0
Class-Path: .
Main-Class: start

Answer 1

Add nonexec.jar to the class path in your manifest, ie

Manifest-Version: 1.0
Class-Path: nonexec.jar
Main-Class: start

If you just use Class-Path: . the current directory ( . ) is searched for classes.
If you need more than one jar on the class path list them all separated with a space:

Class-Path: nonexec.jar nonexec2.jar nonexec3.jar