无法取消引用int - 黑马程序员技术交流社区

import java.util.*;
class StuNameComparator implements Comparator<Student>
{
public int compare(Student s1,Student s2)
{
int num = s1.getName().compareTo(s2.getName());
if(num==0)
return new Integer(s1.getAge()).compareTo(new Integer(s2.getAge()));
return num;
}
}
class MapTest2
{
public static void main(String[] args)
{
TreeMap<Student,String> tm = new TreeMap<Student,String>(new StuNameComparator());
tm.put(new Student("lisi1",21),"beijing");
tm.put(new Student("blisi2",22),"shanghai");
tm.put(new Student("lisi3",23),"nanjing");
tm.put(new Student("alisi4",24),"wuhan");
Set<Map.Entry<Student,String>> entrySet = tm.entrySet();
Iterator<Map.Entry<Student,String>> it = entrySet.iterator();
while (it.hasNext())
{
Map.Entry<Student,String> me = it.next();
Student stu = me.getKey();
String addr = me.getValue();
System.out.println(stu+":::"+addr);
}
}
}

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