HashMap key重复保存

下面是我做的一个简单列子：供大家参考！
1.定义实体类： Content
public class Content {

private String name;
private long time;

public Content(String name, long time){
this.name=name;
this.time=time;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public long getTime() {
return time;
}
public void setTime(Long time) {
this.time = time;
}

}

2.下面是测试类： Test
public class Test {
       public static void main(String[] args) {
         //声明map 对象
Map<Content, String[]> m =new IdentityHashMap<Content, String[]>();
//给map 对象赋值
m.put(new Content("wang",123456l), new String[]{"111"});
m.put(new Content("wang1",123457l), new String[]{"222","3333"});


Set<Map.Entry<Content, String[]>> set = set = m.entrySet();

//得到集合
Iterator<Map.Entry<Content, String[]>> iter = set.iterator();
//循环遍历
while (iter.hasNext()) {

   Map.Entry<Content, String[]> me =iter.next();
   System.out.println("======="+me.getKey().getName()+"======"+me.getValue()[0]);
}

     }


}

3.输出结果：
wang1===222===3333
wang===111===