设计模式之模板模式

1.抽象类

package com.example.demo.templete;

public abstract class HummerModel {
    public abstract void start();

    public abstract void stop();

    public abstract void alarm();

    public abstract void engineBoom();

    /**
     * 共性的方法，也是模板方法模式的体现
     */
    public final void run() 
  {
     this.start();
     this.engineBoom(); 
     this.alarm();
     this.stop();
   } 
}

　2.实现子类1

package com.example.demo.templete;

public class HummerH1Model extends HummerModel {
    @Override
    public void start() {
        System.out.println("悍马H1发动...");
    }

    @Override
    public void stop() {
        System.out.println("悍马H1停车...");
    }

    @Override
    public void alarm() {
        System.out.println("悍马H1鸣笛...");
    }

    @Override
    public void engineBoom() {
        System.out.println("悍马H1引擎声音是这样的...");
    }
}

　　3、实现子类2

package com.example.demo.templete;

public class HummerH2Model extends HummerModel {
    @Override
    public void start() {
        System.out.println("悍马H2发动...");
    }

    @Override
    public void stop() {
        System.out.println("悍马H2停车...");
    }

    @Override
    public void alarm() {
        System.out.println("悍马H2鸣笛...");
    }

    @Override
    public void engineBoom() {
        System.out.println("悍马H2引擎声音是这样的...");
    }
}

　　4.场景类

package com.example.demo.templete;

public class Client {
    public static void main(String[] args) {
        HummerModel h1 = new HummerH1Model();
        h1.run();
    }
}