【java】HashMap、Map、Set、HashMap.put()、HashMap.keySet()、HashMap.entrySet()、Map.Entry内部类

 1 package com.tn.hashMap;
 2 
 3 public class Student {
 4     private String id;
 5     private String name;
 6     public Student(String id, String name) {
 7         super();
 8         this.id = id;
 9         this.name = name;
10     }
11     public String getId() {
12         return id;
13     }
14     public void setId(String id) {
15         this.id = id;
16     }
17     public String getName() {
18         return name;
19     }
20     public void setName(String name) {
21         this.name = name;
22     }
23     @Override
24     public String toString() {
25         return  name;
26     }    
27 }

Student