java实现List中对象排序 java实现List中对象排序的方法

package com.test; 
import java.util.ArrayList; 
import java.util.Collections; 
import java.util.Comparator; 
import java.util.List; 
public class NewsManager { 
 /** 
  * @param args 
  */ 
 public static void main(String[] args) { 
  List newss=getNewsList(); 
  for(int i=0;i<newss.size();i++) 
  { 
   News news=(News)newss.get(i); 
   System.out.println("id:"+news.getId()); 
   System.out.println("title:"+news.getTitle()); 
   System.out.println("hits:"+news.getHits()); 
  } 
 } 
 public static List getNewsList() 
 { 
  List list=new ArrayList(); 
  News news1=new News(); 
  news1.setHits(1); 
  news1.setId(1); 
  news1.setTitle("test1"); 
  list.add(news1); 
  News news2=new News(); 
  news2.setHits(7); 
  news2.setId(2); 
  news2.setTitle("test2"); 
  list.add(news2); 
  News news3=new News(); 
  news3.setHits(3); 
  news3.setId(3); 
  news3.setTitle("test3"); 
  list.add(news3); 
  News news4=new News(); 
  news4.setHits(5); 
  news4.setId(4); 
  news4.setTitle("test4"); 
  list.add(news4); 
  // 按点击数倒序 
  Collections.sort(list, new Comparator<News>() { 
   public int compare(News arg0, News arg1) { 
    int hits0 = arg0.getHits(); 
    int hits1 = arg1.getHits(); 
    if (hits1 > hits0) { 
     return 1; 
    } else if (hits1 == hits0) { 
     return 0; 
    } else { 
     return -1; 
    } 
   } 
  }); 
  return list; 
 } 
}