How to change the layout of an input file and write to an output file

Question

Hi
I have a .csv file which has a layout as schoolNo. , county1,county2,county3,county4,county5
It will need to go into an output file as schoolNo. repeated and a county on each record .
ie., schoolNo.,county1
schoolNo.,county2
schoolNo.,county3
schoolNo.,county4
schoolNo.,county5
I wrote the java program as follows ..which results in this error
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException
BECAUSE :--
i know bec., the first record doesnot have county3,county4,county5 . So when the if loop for county3 lenght is checked it gives this exception .
Pls help me write this program ..thanks in advance .
/Here I open the input file and read in record by record                                                                                                                        
          BufferedReader readin;
          try {
               readin = new BufferedReader(new FileReader(InFile));
               String firstLine = readin.readLine();
               String[] headers = firstLine.split(",");
               columnCount = headers.length;
               System.out.println("Columns in ZIP Master File: "+columnCount);
               for(String input ;(input = readin.readLine()) != null; ){
                    recCount++;
                    input = input.substring(1);               
                    String[] column = input.split(",");
                    if(columnCount == 10){
                         eachIP++;
//                               OUTPUT FILE
                                if(column[1].length()> 0) {
                                   String mainStr = column[0] + "," + column[1] ; 
                                   Count++;
                                   totalcolumns++;
                                   writeOutFile.write(mainStr);
                                   writeOutFile.newLine();
                              else{
                              bypassedCount++;
                                if(column[2].length()>0){
                                     String mainStr = column[0]+ "," + column[2];
                                     Count++;
                                     totalcolumns++;
                                   writeOutFile.write(mainStr);
                                   writeOutFile.newLine();
                              else{
                              bypassedCount++;
                                if(column[3]..length()>0){
                                     String mainStr = column[0]+ "," + column[3];
                                     Count++;
                                     totalcolumns++;
                                   writeOutFile.write(mainStr);
                                   writeOutFile.newLine();
                              else{
                              bypassedCount++;
                             }

Answer 1

There are two split( ... ) methods; check the other one (the one with two arguments), it allows for empty entries to be counted, i.e. split(inputString, -1) gives you the wanted results.