Java设计模式之外观模式解析

package com.jbp.designpattern.facade;
/**
 * @ClassName: Facade
 * @description: 外观类
 * @author: JiangBeiPing
 * @create: 2021-07-27 11:15
 * @Version: 1.0
 **/
public class Facade {
    // 被委托的对象
    SubSystem1 system1;
    SubSystem2 system2;
    SubSystem3 system3;
    public Facade() {
        this.system1 = new SubSystem1();
        this.system2 = new SubSystem2();
        this.system3 = new SubSystem3();
    }
    // 提供给外部的方法
    public void method1(){
        system1.method1();
    }
    public void method2(){
        system2.method1();
    }
    public void method3(){
        system3.method1();
    }
}
 

package com.jbp.designpattern.facade;
/**
 * @ClassName: SubSystem
 * @description: 子系统一号
 * @author: JiangBeiPing
 * @create: 2021-07-27 11:16
 * @Version: 1.0
 **/
public class SubSystem1 {
    public void method1(){
        System.out.println("子系统一号---方法1号");
    }
}
 

package com.jbp.designpattern.facade;
/**
 * @ClassName: SubSystem2
 * @description: 子系统二号
 * @author: JiangBeiPing
 * @create: 2021-07-27 11:19
 * @Version: 1.0
 **/
public class SubSystem2 {
    public void method1(){
        System.out.println("子系统二号---方法1号");
    }
}
 

package com.jbp.designpattern.facade;
/**
 * @ClassName: SubSystem3
 * @description: 子系统三号
 * @author: JiangBeiPing
 * @create: 2021-07-27 11:24
 * @Version: 1.0
 **/
public class SubSystem3 {
    public void method1(){
        System.out.println("子系统三号---方法1号");
    }
}
 

package com.jbp.designpattern.facade;
/**
 * @ClassName: Test
 * @description: 测试
 * @author: JiangBeiPing
 * @create: 2021-07-27 11:29
 * @Version: 1.0
 **/
public class Test {
    public static void main(String[] args) {
        Facade facade = new Facade();
        facade.method1();
        facade.method2();
        facade.method3();
    }
}