装饰者模式-继承模式和接口模式

接口模式：

基本接口定义：

package com.example.designpatten.decoratormode.interfacemode;

public interface Gun {

    public void shoot();

    public void aim();

    public void load();

    public void unLoad();
}

　一个抽象类实现该接口并且持有该接口：

package com.example.designpatten.decoratormode.interfacemode;

public abstract class GunBaseClass implements Gun {

    private Gun gun;

    public GunBaseClass(Gun gun) {
       this.gun = gun;
    }

    @Override
    public void shoot() {
        gun.shoot();
    }

    @Override
    public void aim() {
        gun.aim();
    }

    @Override
    public void load() {
        gun.load();
    }

    @Override
    public void unLoad() {
        gun.unLoad();
    }
}

　　定义消音器功能类实现基础类

package com.example.designpatten.decoratormode.interfacemode;

public class Sight extends GunBaseClass {

    public Sight(Gun gun) {
        super(gun);
    }

    @Override
    public void aim() {
        super.aim();
        System.out.println("已加装瞄准镜");
    }
}　　

定义静音器类继承基础类：

package com.example.designpatten.decoratormode.interfacemode;

public class Silencer extends GunBaseClass {

    public Silencer(Gun gun) {
        super(gun);
    }

    @Override
    public void shoot() {
        super.shoot();
        System.out.println("已加装消音器，开枪声音小了");
    }
}

　　定义AK47枪支实现接口：

package com.example.designpatten.decoratormode.interfacemode;

public class AK47 implements Gun {
    @Override
    public void shoot() {
        System.out.println("AK47 shoot!");
    }

    @Override
    public void aim() {
        System.out.println("AK47 aim!");
    }

    @Override
    public void load() {
        System.out.println("AK47 load!");
    }

    @Override
    public void unLoad() {
        System.out.println("AK47 unLoad!");
    }
}

　　测试类测试：

package com.example.designpatten.decoratormode.interfacemode;

import com.example.DemoApplication;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class TestInterface {
    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class, args);

       Gun gun = new Sight(new Silencer(new AK47()));

       gun.unLoad();
       gun.load();
       gun.aim();
       gun.shoot();
    }
}

　　输出结果：

 ps：继承模式待后续补充。