鸟与飞机

template_method

public abstract class Flyable {
    //抽象方法
    public abstract void takeoff();
    //钩子Hooks(让继承类来重写)
    public void fly(){

    }
    //实际方法
    private void land(){
        System.out.println("着陆");
    }
    //模板方法
    public void act(){
        takeoff();
        fly();
        land();
    }
}

Flyable

public abstract class Flyable {
    //抽象方法
    public abstract void takeoff();
    //钩子Hooks(让继承类来重写)
    public void fly(){

    }
    //实际方法
    private void land(){
        System.out.println("着陆");
    }
    //模板方法
    public void act(){
        takeoff();
        fly();
        land();
    }
}

Airplane

public class Airplane extends Flyable{
    @Override
    public void takeoff() {
        System.out.println("踩油门，在跑道上滑行起飞");
    }

    @Override
    public void fly() {
        System.out.println("滑翔");
    }
}

Bird

public class Bird extends Flyable{
    @Override
    public void takeoff() {
        System.out.println("弹跳起飞");
    }

    @Override
    public void fly() {
        System.out.println("拍动翅膀");
    }
}

Main

public class Main {
    public static void main(String[] args) {
        Flyable airplane = new Airplane();
        Flyable bird = new Bird();
        airplane.act();
        bird.act();
    }
}