Comparator排序题,该如何处理

import java.util.*;[code]import java.util.*;class StuScoreSort {        public static void main(String[] args)        {                Student stu1 = new Student("成龙",28,100);                Student stu2 = new Student("李连杰",32,95);                Student stu3 = new Student("洪金宝",35,92);                Student stu4 = new Student("杨紫琼",25,88);                Student stu5 = new Student("元奎",36,83);                ArrayList<Student> list = new ArrayList<Student>();                list.add(stu1);                list.add(stu2);                list.add(stu3);                list.add(stu4);                list.add(stu5);                Collections.sort(list,new MyComparator());                Iterator<Student> it = list.iterator();                while(it.hasNext())                {                        Student s = it.next();                        System.out.println(s.getName()+","+s.getAge()+","+s.getScores());                }        }}class Student{        private String name;        private int age;        private int scores;        Student()        {}        Student(String name,int age,int scores)        {                this.name = name;                this.age = age;                this.scores = scores;        }        public void setName(String name)        {                this.name = name;        }        public void setAge(int age)        {                this.age = age;        }        public void setScroes(int scores)        {                this.scores = scores;        }        public String getName()        {                return name;        }        public int getAge()        {                return age;        }        public int getScores()        {                return scores;        }}class MyComparator implements Comparator{        public int compare(Object o1,Object o2)        {                Student s1 = (Student)o1;                Student s2 = (Student)o2;                if(s1.getScores()<s2.getScores())                        return -1;                else if(s1.getScores()==s2.getScores())                        return 0;                else                        return 1;        }}

class MyComparator implements Comparator<Student> {    @Override  public int compare(Strudent s1, Student s2) {      // ...  }}
------解决方案--------------------
class MyComparator implements Comparator
{
       public int compare(Object o1,Object o2)
       {
               Student s1 = (Student)o1;
               Student s2 = (Student)o2;



class MyComparator implements Comparator<Student> {

	public int compare(Student o1, Student o2) {
		Student s1 = o1;
		Student s2 = o2;