package cn.itcast_02;

import java.util.HashMap;
import java.util.Set;

/*
* HashMap<Student,String>
* 键:Student 学生对象
* 要求:如果两个对象的成员变量值都相同,则为同一个对象。
* 值:String 学号
*/
public class HashMapDemo4 {
public static void main(String[] args) {
// 创建集合对象
HashMap<Student, String> hm = new HashMap<Student, String>();

// 创建学生对象
Student s1 = new Student("貂蝉", 27);
Student s2 = new Student("王昭君", 30);
Student s3 = new Student("西施", 33);
Student s4 = new Student("杨玉环", 35);

Student s5 = new Student("王昭君", 30);
Student s6 = new Student("西施", 33);

// 把学生对象添加到集合对象中
hm.put(s1, "8888");
hm.put(s2, "7777");
hm.put(s3, "6666");
hm.put(s4, "5555");
hm.put(s5, "4444");
hm.put(s6, "3333");

// 遍历集合
Set<Student> set = hm.keySet();
for (Student key : set) {
String value = hm.get(key);
System.out.println(key.getName() + "---" + key.getAge() + "---"
+ value);

}
}
}