mawenqi

摘要： 1 package com.dengbao; 2 3 public class DemoPerson { 4 5 public static void main(String[] args) { 6 Person student=new Student("旺财",3, 90.5f); 7 Person worker=new Woker("... 阅读全文

摘要： 1 package com.dengbao; 2 3 public abstract class A { 4 private String name; 5 public A(String name) { 6 this.name=name; 7 } 8 public void A(String name2) { 9 } 1... 阅读全文