Java design Pattern _ appearance mode

package com.wangbiao.design.facade;/** *  *  @Title:  client.java * @ package com.wangbiao.design.facade *  @Description: todo  *  @author   wangbiao    *  @date  2014-9-20  pm 03:56:08  *  @version   V1.0 */public class client {    public static void main (String[] args)  {        facade facade = new  facade ();         facade.methoda ();         facade.methodb ();    }}package com.wangbiao.design.facade;/**  *  *  @Title: facade.java *  @Package  com.wangbiao.design.facade *  @Description: design pattern-facade  *  @author  wangbiao    *   @date  2014-9-20  pm 03:54:02  *  @version  V1.0 */public class Facade {         private subsystemone one;    private  SubSystemTwo two;    private SubSystemThree three;     private subsystemfour four;        public facade ( )  {        //init         One = new subsystemone ();         two = new  subsystemtwo ();         three = new subsystemthree ();         four = new subsystemfour ();     }        public void methoda () {       &nBsp; // one,two,three        one.methodone ();         two.methodtwo ();         Three.methodthree ();     }        public void  methodb () {        // four,three         three.methodthree ();         four.methodfour ();     }    }class SubSystemOne{         public void methodone () {         System.out.println ("Subsystemone");     }    }class subsystemtwo{         public void methodtwo () {         system.out.println ("SubsyStemtwo ");    }    }class subsystemthree{         public void methodthree () {         System.out.println ("Subsystemthree");    }    }class  Subsystemfour{        public void methodfour () {         system.out.println ("Subsystemfour");    }     }

Java design Pattern _ appearance mode