摘要: 1、定义被观察类,继承Observable 1 public class Observed extends Observable{ 2 private Integer num; 3 4 public Observed() { 5 super(); 6 } 7 8 public Observed(In 阅读全文
posted @ 2019-11-07 16:50 束发读诗书 阅读(164) 评论(0) 推荐(0) 编辑