筛选出重复记录

1,张三,28
2,李四,35
3,张三,28
4,王五,35
5,张三,28
6,李四,35
7,赵六,28
8,田七,35

package com;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Comparator;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.TreeSet;

public class GetNameTest {
    public static void main(String[] args) {
Map results = new HashMap();
InputStream is = GetNameTest.class.getResourceAsStream("info.txt");
BufferedReader br = new BufferedReader(new InputStreamReader(is));
String line = null;
try {
while((line = br.readLine())!=null){
dealLine(line, results);
}
sortResults(results);
} catch (Exception e) {
e.printStackTrace();
}

}
   
    static class User{
    public String name;
    public Integer value;
    public User(String name,Integer value){
    this.name=name;
    this.value=value;
    }
   
    public boolean equals(Object obj) {
    boolean result = super.equals(obj);
    System.out.println(result);
    return result;
    }
    }
    public static void sortResults(Map results){
    TreeSet sortResults = new TreeSet(
          new Comparator(){

public int compare(Object o1, Object o2) {
User user1=(User)o1;
User user2=(User)o2;
if(user1.value<user2.value){
return -1;
}else if(user1.value>user2.value){
return 1;
}else{
return user1.name.compareTo(user2.name);
}
}
         
          }
    );
    Iterator iterator = results.keySet().iterator();
    while(iterator.hasNext()){
    String name = (String)iterator.next();
    Integer value = (Integer)results.get(name);
    if(value>1){
    sortResults.add(new User(name,value));
    }
    }
    printResults(sortResults);
    }
   
    public static void printResults(TreeSet sortedResults){
    Iterator iterator = sortedResults.iterator();
    while(iterator.hasNext()){
    User user = (User)iterator.next();
    System.out.println(user.name+":"+user.value);
    }
    }
    public static void dealLine(String line,Map map){
    if(!"".equals(line.trim())){
    String[] results = line.split(",");
    if(results.length == 3){
    String name = results[1];
    Integer value =(Integer) map.get(name);
    if(value == null){
    value = 0;
    }
    map.put(name, value+1);
    }
    }
    }
}