给你个例子,自己理解哈
interface Fruit { //接口:水果
public void eat(); //吃水果的方法
}
class Apple implements Fruit {
public void eat() {
System.out.println("小明吃苹果");
}
}
class Orange implements Fruit {
public void eat() {
System.out.println("小明吃橘子");
}
}
public class FruitDemo {
public void main(String[] args){
Fruit f=new Apple();
f.eat();
}
}
参考资料:;