Exemplo n.º 1
0
        static public void Main()
        {
            State stateA = new ConcreteStateA();
            State stateB = new ConcreteStateB();

            Context context = new Context(stateA);

            context.Request();  //表现状态A的行为
            context.SwitchSate(stateB);
            context.Request();  //表现状态B的行为
        }