这是我在这个IM gettng O / P的代码，evrythng如果罚款，但我无法打印输出到file.Canü帮助我在那里有错误实际上

import java.io.*;

import java.util.*;

public class MainClass {

    public static void main(String[] args) throws Exception {

        int flag=0,cindex=0;;

        String fname=null,first=null,second=null;

        TreeMap tm=new TreeMap();

        File f=new File("D:\\final.txt");

        f.createNewFile();

        PrintWriter pw=new PrintWriter(new FileWriter(f));

        File f1=new File("D:\\trnstons");

        String line=null;

        Map hm2;

        Set s2;

        String lkeys=null,lvalues=null;

        int c=0;

        //BufferedReader br1;



        f1.mkdir();

        String s[]=f1.list();

        //System.out.println("TOTAL COUNT OF FILE::"+s.length);

        int fcount=s.length;

 

        for(String s1:s)

        { 

            File f2=new File("D:\\trnstons\\"+s1);

            BufferedReader br1=new BufferedReader(new FileReader(f2));

            System.out.println( " "+f2.getName());

            //pw.println("===========================FILE NAME IS::====================="+f2.getName());

            line=br1.readLine();

	   

            while(line!=null)

            {

                while((line.equals("SUCCESS")))

                {

                    line=br1.readLine();

                    while(line!=null)

                    {

                        //System.out.println(line);

                        cindex=line.indexOf(",");

                        if(cindex > (-1))

                        {

                            first=line.substring(0,cindex);  

                            second=line.substring(cindex+1); 

                            tm.put(second,first);

                        }

                        //pw.print(line);

                        line=br1.readLine();

		  }

                    ////

                    flag=1;

                    break;

               }

               if(flag==1) 

               break;

	      line=br1.readLine();

	

	  }

	  /////

	  //System.out.println(tm);

      }

  

      //the values in tm are sorted according to values.Now for printing in file as k,v pairs we need to conver to LinkedHashMap

      hm2=new LinkedHashMap(tm);

  

      s2=hm2.entrySet();

      Iterator i=s2.iterator();

      //System.out.println("the values in the tm object are");

      while(i.hasNext())

      {

          Map.Entry me=(Map.Entry)i.next();

          lkeys= (String)me.getKey();/*as the getKey and GetValue returns key and value in the String form,convert in to ArrayList

(it implements RandonAccess(I),so its good at retriveing  rather that any other List  */

          lvalues= (String)me.getValue();

 

          System.out.print(lvalues);

          System.out.print(",");

          System.out.println(lkeys);

          ///trying to print in file 

          pw.print(lvalues);

          pw.print(",");

          pw.println(lkeys);

	 

      } 

   }

}

| udayz999