外观模式-分层架构，方便维护遗留下的大型的系统

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public class Facade {

    /**

     * @param args 外观模式

     */

    One one;

    Two two;

    Three three;

    public
Facade() {

        one=new
One();

        two=new
Two();

        three=new
Three();

    }

    public
void Method1() {

        System.out.println("********1");

        one.methodone();

        two.methodtwo();

    }

    public
void Methon2() {

        System.out.println("*********2");

        two.methodtwo();

        three.methodthree();

    }

    public
static void main(String[] args) {

        // TODO Auto-generated method stub

        Facade facade=new
Facade();

        facade.Method1();

        facade.Methon2();

    }

}

class
One{

    public
void methodone() {

        System.out.println("1111");

    }

}

class
Two{

    public
void methodtwo() {

        System.out.println("2222");

    }

}

class
Three{

    public
void methodthree() {

        System.out.println("3333");

    }

}

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