深入理解Java设计模式之外观模式

class SubSystemOne
{
    public void MethodOne()
    {
        Console.WriteLine("子系统方法一");
    }
}
class SubSystemTwo
{
    public void MethodTwo()
    {
        Console.WriteLine("子系统方法二");
    }
}
class SubSystemThree
{
    public void MethodThree()
    {
        Console.WriteLine("子系统方法三");
    }
}
class SubSystemFour
{
    public void MethodFour()
    {
        Console.WriteLine("子系统犯法四");
    }
}

class Facade
{
    SubSystemOne one;
    SubSystemTwo two;
    SubSystemThree three;
    SubSystemFour four;
    public Facade()
    {
        one = new SubSystemOne();
        two = new SubSystemTwo();
        three = new SubSystemThree();
        four = new SubSystemFour();
    }
    public void MethodA()
    {
        Console.WriteLine("\n方法组合A()---");
        one.MethodOne();
        two.MethodTwo();
        four.MethodFour();
    }
    public void MethodB()
    {
        Console.WriteLine("\n方法组B()---");
        two.MethodTwo();
        three.MethodThree();
    }
}

static void Main(string[] args)
{
    Facade facade = new Facade();
    facade.MethodA();
    facade.MethodB();
    Console.Read();
}