C:\>java -Xmx1024M -Xms512M -cp Minecraft.jar net.minecraft.LauncherFrame
Exception in thread "main" java.lang.NoClassDefFoundError: net/minecraft/Launche
rFrame
Caused by: java.lang.ClassNotFoundException: net.minecraft.LauncherFrame
        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)
Could not find the main class: net.minecraft.LauncherFrame.  Program will exit.

C:\>pause
Press any key to continue . . .