老张的小迷妹儿

摘要： package cn.wzx.www; public class A { private B b = null; public void fun(){ this.b=new B(this); this.b.fun(); } public void print(){ System.out.println("Hello... 阅读全文

摘要： package cn.wzx.www; public abstract class Person { private String name; private int age; public Person(String name,int age){ this.name=name; this.age=age; } ... 阅读全文