有如下两个类(只写了类的属性,请自行添加相应的构造方法和get/set 方法)要求:完善Worker 和Address 类,使得Worker 对象能够正确放入HashSet 中:即将Worker 放入HashSet 中时不会出现重复元素。并编写相应测试代码WorkerTest类。用以下对象实例进行测试。"张三",18,4800.00,"河南许昌","461111","李四",28,5800.00,"河南周口","466000","张三",18,4800.00,"河南许昌","461111","王五",25,5300.00,"河南郑州","461000" 请问怎么做?