/media/sda-magnetic/david/Dokumente-15/fernuni-hagen/cs-i-ii/old-cs-2-03/java-new/2020-11-27/CallBackFunctionTestProg.java

public class CallBackFunctionTestProg {
    public static void main (String [] args) {
        CallCallBackFunctionClass ccbfc = new CallCallBackFunctionClass ();
        CallBackFunction test = new CallBackFunctionClass ();
        ccbfc.callbackfunctioncall (test);
    }


    public static interface CallBackFunction {
        void printString ();
    }
    public static class CallBackFunctionClass implements CallBackFunction {
        public void printString () {
            System.out.println ("Hallo Welt");
        }
    }
    
    public static class CallCallBackFunctionClass {
        CallCallBackFunctionClass () {}
        void callbackfunctioncall (CallBackFunction callbackfunction) {
            callbackfunction.printString();
        }
    }

}