package btp.oneP;

public class DogsAndRobots {

public static void main(String[] args) {

PerformingDog d = new PerformingDog();

Robott r = new Robott();

Communicate.perform(d);

Communicate.perform(r);

}

}

interface Performs{

void speak();

void sit();

}

class PerformingDog extends Dog implements Performs{

@Override

public void speak() {

System.out.println("Woof!");

}

@Override

public void sit() {

System.out.println("Sitting!");

}

public void reproduce(){}

}

class Robott implements Performs{

@Override

public void speak() {

System.out.println("Click!");

}

@Override

public void sit() {

System.out.println("Clank!");

}

public void oilChange(){}

}

class Communicate{

public static <T extends Performs> void perform(T performs){

performs.speak();

performs.sit();

}

//下面和上面的一样，不构成重载

/*public static void perform(Performs p){

p.speak();

p.sit();

}*/

}