package org.karaffe.compiler;

public class Main {
    public static void main(String[] args) {

    }
}

package org.karaffe.compiler;

public class Main {
    public static void main(String[] args) {
        if (args.length == 0) {
            System.out.println("Usage:");
            System.out.println("  krfc <options> <sources>");
        }
    }
}

Add usage