JAVA HashSet简单代码示例

摘要: 我正在学习JAVA SE 集合

import java.util.HashSet;
import java.util.Iterator;

import text5.Employee;
public class HashSetText {
public static void main(String args[]){
HashSet<Employee> ha = new HashSet<Employee>();
Employee z=new Employee("张三",24,200.0);
Employee l=new Employee("李四",21,300.0);
Employee t=new Employee("提莫",22,250.0);
Employee m=new Employee("蛮子",23,350.0);
Employee j=new Employee("剑圣",20,300.0);
Employee c=new Employee("剑圣",20,300.0); //相同的元素只会放入一次，Set是无序的。
ha.add(z);
ha.add(l);
ha.add(t);
ha.add(m);
ha.add(j);
ha.add(c);
Iterator<Employee> it=ha.iterator(); //迭代器
while(it.hasNext()) //如果仍有元素可以迭代，则返回 true。
{
System.out.println(it.next().toString());
}
}
}