JAR Problems

[monkey_instinct]

I have a problem creating a JAR executable. I have the following directory structure:

• bin
  • edu
    • uprm
      • spriteanimator
        • ui
          • *.class
        • Main.class
• src
• data

I use the jar tool to create an executable file like this: jar cmf manifest.txt SpriteAnimator.jar bin. The manifest file contents is this one:

Main-Class: edu.uprm.spriteanimator.SpriteAnimator
Class-Path: bin

But for some reason the file keeps telling me that it can't find the main class. I've tried several different ways but none seems to work. Can anyone help me?