csv parser reading headers

I'm working on a csv parser, I want to read headers and the rest of the csv file separately. Here is my code to read csv.

The current code reads everything in the csv file, but I need to read headers separate. please help me regarding this.

public class csv {

private void csvRead(File file)
{
    try
    {
    BufferedReader br = new BufferedReader( new FileReader(file));
    String strLine = "";
    StringTokenizer st = null;
    File cfile=new File("csv.txt");
    BufferedWriter writer = new BufferedWriter(new FileWriter(cfile));
    int tokenNumber = 0;

    while( (strLine = br.readLine()) != null)
    {
            st = new StringTokenizer(strLine, ",");
            while(st.hasMoreTokens())
            {

                    tokenNumber++;
                    writer.write(tokenNumber+"  "+ st.nextToken());
                    writer.newLine();
            }


            tokenNumber = 0;
            writer.flush();
    }
}

    catch(Exception e)
    {
        e.getMessage();
    }
}