aft.jar net.minecraft.LauncherFrame
Exception in thread "main" java.lang.NoClassDefFoundError: Minecraft/jar
Caused by: java.lang.ClassNotFoundException: Minecraft.jar
        at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
Could not find the main class: Minecraft.jar. Program will exit.