java IO问题：将一个txt文件去重并排序输出 帮忙看下下面代码有什么问题

Question

 import java.util.*;  
import java.io.*;  
public class ResortByDel {  

public static class TimeComparator implements Comparator<TimeAndContent> {
public int compare(TimeAndContent o1, TimeAndContent o2) {
TimeAndContent timeContent1=new TimeAndContent();
TimeAndContent timeContent2=new TimeAndContent();
String time1=timeContent1.getTime();
String time2=timeContent2.getTime();
if(time1.compareTo(time2)==1){
return 1;
}else if(time1.compareTo(time2)==-1){
return -1;
}else{
return timeContent1.getContent().compareTo(timeContent2.getContent());
}


}
}      
public static void main(String[] args) throws Exception{
               FileReader fr=new FileReader("D:\\test1.txt");   
      BufferedReader br=new BufferedReader(fr);  
      List<TimeAndContent> contentList=new ArrayList<TimeAndContent>();  
      String line;   
      while((line=br.readLine())!=null) {    
      TimeAndContent timeContent=new TimeAndContent();    
      String[] row=line.split(" ",2); 
      timeContent.setTime(row[0]);
      timeContent.setContent(row[1]); 
      contentList.add(timeContent);          
      }  
 
 //去重
 Iterator<TimeAndContent> it=contentList.iterator(); 
 while(it.hasNext()){
 TimeAndContent a=it.next();
 if(contentList.contains(a)){
 it.remove();
 }else{
 contentList.add(a);
 }
 }
         //排序   
 Collections.sort(contentList , new TimeComparator());  
          StringBuilder builder = new StringBuilder();   
            for (int i = 0; i < contentList.size(); i++){  
             TimeAndContent timeContent=contentList.get(i);
                builder.append(timeContent.getTime());   
                builder.append(" ");   
                builder.append(timeContent.getContent());   
                builder.append("\r");   
              }     
             System.out.println(builder.toString());   
              write("D:\\test.txt", builder.toString());  
    }
     static class TimeAndContent {
     private String time ;
     private String content;
     public String getTime(){
     return time;
     }
     public void setTime(String time){
     this.time=time;
     }
     public String getContent(){
     return content;
     }
     public void setContent(String content){
     this.content=content;
     }  
     }
   
      public static void write(String filePath,String content) throws IOException{   
            FileWriter fw=new FileWriter(filePath);  
            BufferedWriter bw=new BufferedWriter(fw); 
            bw.write(content);   
         bw.flush();   
        bw.close();    
           }
        
} 
javaio

Answer 1

纯看代码能看出问题的人是真神。。
如果报错就把错误贴出来。
另外你TXT去重的单位是什么？
行还是单位值？
另外排序的按照的规律是啥？

Answer 2

timeContent.setTime(row[0]);
timeContent.setContent(row[1]);//这里数组下标超出了

Answer 3

比较器里貌似有问题,不用传进去的参数,而新建对象.       public int compare(TimeAndContent o1, TimeAndContent o2) 
        {
            //TimeAndContent timeContent1=new TimeAndContent();
            //TimeAndContent timeContent2=new TimeAndContent();
            String time1=o1.getTime();//要用方法定义的形式参数 o1,o2,否则没意义。
            String time2=o2.getTime();
            if(time1.compareTo(time2)==1)
            {
                return 1;
            }
            else if(time1.compareTo(time2)==-1)
            {
                return -1;
            }
            else
            {
                return (o1.getContent()).compareTo(o2.getContent());//用o1,o2
            }
        }

Answer 4

没有报错，执行的时候总是terminated

Answer 5

去重的单位是行
排序首先比较time，若time相同的话在比较后面的content

Answer 6

去重那有问题，按楼主的代码，contentList为空了。
楼主先去掉去重的操作，先跑通排序。

Answer 7

修改一下代码，楼主参考一下：
import java.util.*;  
import java.io.*;  
public class ResortByDel 
{  
    public static class TimeComparator implements Comparator<TimeAndContent> 
    {
        public int compare(TimeAndContent o1, TimeAndContent o2) 
        {
            String time1=o1.getTime();                                  //使用o1,o2,不能新建对象。
            String time2=o2.getTime();
            if(time1.compareTo(time2)==1)
            {
                return 1;
            }
            else if(time1.compareTo(time2)==-1)
            {
                return -1;
            }
            else
            {
                return o1.getContent().compareTo(o2.getContent());
            }
        }
    }//end class TimeComparator     
    public static void main(String[] args) throws Exception
    {
        FileReader fr=new FileReader("d:\\test1.txt");   
        BufferedReader br=new BufferedReader(fr);  
        List<TimeAndContent> contentList=new ArrayList<TimeAndContent>();
        String line;   
        while((line=br.readLine())!=null) 
        {    
            TimeAndContent timeContent=new TimeAndContent();    
            String[] row=line.split(" ",2); 
            timeContent.setTime(row[0]);
            timeContent.setContent(row[1]);            if( !contentList.contains(timeContent))                     //在这里做去重处理。
            {
                contentList.add(timeContent);
            }
        }  
        //排序   
        Collections.sort(contentList , new TimeComparator());  
        StringBuilder builder = new StringBuilder();   
        for (int i = 0; i <contentList.size(); i++)
        {  
            TimeAndContent timeContent=contentList.get(i);
            builder.append(timeContent.getTime());   
            builder.append(" ");   
            builder.append(timeContent.getContent());   
            builder.append("\r\n");                                     //回车加换行。
        }     
        System.out.println(builder.toString());   
        write("D:\\test.txt", builder.toString());  
    }//end main()    static class TimeAndContent 
    {
        private String time ;
        private String content;
        public String getTime()
        {
            return time;
        }
        public void setTime(String time)
        {
            this.time=time;
        }
        public String getContent()
        {
            return content;
        }
        public void setContent(String content)
        {
            this.content=content;
        }
        //重写equals()方法
        public boolean equals(Object other)
        {
            if(!(other instanceof TimeAndContent))
            {
                return false;
            }
            TimeAndContent o=(TimeAndContent)other;
            return this.time.equals(o.time)&&this.content.equals(o.content);
        }
        //重写hashCode()方法，本代码可以不重写。如要用HashSet,HashMap等类时必须重写。
        public int hashCode()
        {
            return time.hashCode()+content.hashCode();
        }
    }//end class TimeAndCountent 
   
    public static void write(String filePath,String content) throws IOException
    {   
        FileWriter fw=new FileWriter(filePath);  
        BufferedWriter bw=new BufferedWriter(fw); 
        bw.write(content);   
        bw.flush();   
        bw.close();    
    }//end write.
}