Java软贱攻城狮

使用PowerDesigner可以描述出类的结构图与时序图范例1：Dog类==============分割线==============范例2：抽象类

范例:工厂模式interface Fruit { public void eat();}class Apple implements Fruit { @Override public void eat() { System.out.println("吃苹果....."); }}class Factory { public static Fruit getInstance(...