class Hen implements A{}没有实现Protectable呀那为什么它里面可以有public void beProtected()『』？

[bbs0422]

public interface Valuable {
public double getMoney();
}

interface Protectable {
public void beProtected();
}

interface A extends Protectable {
void m();
void getMoney();
}

abstract class Animal {
private String name;

abstract void enjoy();
}

class GoldenMonkey extends Animal implements Valuable, Protectable {
public double getMoney() {
return 10000;
}

public void beProtected() {
System.out.println("live in the room");
}

public void enjoy() {

}

public void test() {
Valuable v = new GoldenMonkey();
v.getMoney();
Protectable p = (Protectable)v;
p.beProtected();
}
}

class Hen implements A {
public void m() {}
public void beProtected() {}
public double getMoney() {
return 1.0;
}

public void getMoney() {}

}

[kokobox]

因为interface A 继承了 Protectable 呀


Protectable 里面有要实现的beProtected 抽象方法啊。