class abstrakt {
    public static void main(String argv[]){
	Sample mySample = new Sample();
	SampleInterface myInter = mySample;
	SampleAbstract myAbstrakt = mySample; 
    }
}

/*
 *    abstract class
 */
abstract class SampleAbstract {
    //Member Attribute
    int a;

    //Member Methoden
    public void print() {
	System.out.println("abstract class nr " + a);
    }

    public abstract void move();

}//abstract class SampleAbstract

/*
 *    interface 
 */
interface SampleInterface {
    //Methodensignaturen
    void copy();
    void print();
}//interface

/*
 *    class inplements interface and extends abstract class
 */
class Sample extends SampleAbstract  implements SampleInterface{
    //Implementierungen
    public void copy () {
	System.out.println("copying ...");
    }

    public void move () {
	System.out.println("moving ...");
    }

}//class Sample