java中匿名类的注意细节

abstract class Outer{int num;public Outer(int x){num = x;}public abstract void show1();public abstract void show2();
}public class PC{public static void main(String[] args){new Outer(55)//构造父类部分//子类重写部分{public void show1(){System.out.println(num++);}public void show2(){System.out.println(num++);}public void show3(){System.out.println(num++);}}.show3();Outer out =  new Outer(55){public void show1(){System.out.println(num++);}public void show2(){System.out.println(num++);}public void show3(){System.out.println(num++);}};out.show1();out.show2();//out.show3();// 错误: 找不到符号  out.show3();//注意： 第一个 new Outer(55) 得到是 Outer 的子类对象！//第二个 new Outer(55)得到子类对象之后又进行了类型提升， 所以它会隐藏自身特有的方法，呈现其父类的属性！}
}