Delete and renameto not working in java

Question

guys, i have written a java program that reads file1 into temp file and finally writes into another file. program is working fine with no errors, it even reported that the file is deleted. But actually the file was not deleted and renameto was never successful. could you guys see any problem with file definetion so that delete is not successful. please see code from 6th line from bottm.
public class Mergewrs {public static void main (String[] args) throws IOException {
/* Creates a new instance of mergewrsFile */
     /* Making sure an argument is specified */
     if(args.length > 0)
          String line           = null;
          String policyflag      = null;
          int addCnt          = 0;
          File mergein = new File("c:\\javat\\mergein.dat");
          /* Specifiying input file to be used */
          BufferedReader  inFile  = new BufferedReader(new FileReader(mergein));
          line = inFile.readLine();
          /* Read all lines in the wrsfile specified */
          while(line != null)
               System.out.println("Process1: ");
               policyflag      = line.substring(0,1);
               // Reads input record from 2 thru 1025
               String actionIndicator = new String();
               if(policyflag != null && policyflag.equalsIgnoreCase("A"))
                    { actionIndicator = "A";
                      addCnt = addCnt+1;
                      process(actionIndicator, line);
               catch(IOException e)
                    {System.err.println("File input error");}
               line = inFile.readLine();
          } //while ends
     } //if ends
public static void process(String actionIndicator, String line) throws IOException
     String line1 = null;
     String templine = null;
     String policyId = null;
     File policyOutfile = new File("c:\\javat\\mergeout.dat");
     File policyOutfileold = new File("c:\\javat\\mergeoutold.dat");
     BufferedReader  policyOut  = new BufferedReader(new FileReader(policyOutfile));
     File tempfile = new File("c:\\javat\\tempfile.dat");
     BufferedWriter tempout = new BufferedWriter(new FileWriter(tempfile));
     line1 = policyOut.readLine();
     try{
          policyId =line1.substring(150,165);
          while(line1 != null)
          {     policyId =line1.substring(150,165);
               try
                    if(policyId.equals(line.substring(151,166)))
                         { templine =line1.substring(0,151);
                    else { templine=line1;}
                    tempout.write(templine);
                    tempout.newLine();
                    line1 = policyOut.readLine();
               catch (Exception e) {System.err.println("File exception h");}
          } //while ends
          try { tempout.close(); }
          catch (Exception e) { e.printStackTrace();}
          try { policyOut.close(); }
          catch (Exception e) { e.printStackTrace();}
          try
               if(policyOutfile.exists())
                    policyOutfile.delete();
                    tempfile.renameTo(policyOutfile);
          catch (Exception e) {System.out.println("error"); }
}

Answer 1

guys, i have written a java program that reads file1
into temp file and finally writes into another file.
program is working fine with no errors, it even
reported that the file is deleted. But actually the
file was not deleted and renameto was never
successful. could you guys see any problem with file
definetion so that delete is not successful. please
see code from 6th line from bottm.Since you don't actually do anything with the return value how do you know it was successful?