interface AInterface {
default String message() {
return "Hallo A";
}
}
class A implements AInterface {
}
interface BInterface extends AInterface {
default String message() {
return "Hallo B";
}
}
class B implements BInterface {
}
class C extends B {
public String message() {
return "Hallo C";
}
}
class D extends C implements AInterface { }
interface Z { static void print() { System.out.println("Hello Z"); }}
class ZZ implements Z {}
public class Main {
public static void main(String[] args) {
AInterface a = new A();
System.out.println(a.message());
AInterface b = new B();
System.out.println(b.message());
AInterface c = new C();
System.out.println(c.message());
AInterface d = new D();
System.out.println(d.message());
Z.print();
}
}