FIle- Highest Lowest Average

import java.io.*;

/**
 * Created by ruhul on 4/19/17.
 */
public class CreateFile {
    public static void main(String[] args) {
        String id;
        String[] marks,firstName;
        int highest=0,lowest=999;
        String highestName = null, lowestName=null;
        try {
            BufferedReader br = new BufferedReader(new FileReader("student"));
            PrintWriter pw = new PrintWriter(new FileWriter("student_result"));
            id=br.readLine();
            while(id!=null)
            {
                marks=id.split("-");
                pw.write(marks[1]);
                int average=(Integer.parseInt(marks[2])+Integer.parseInt(marks[3])+Integer.parseInt(marks[4]))/3;
                if(average>highest)
                {
                    highest=average;
                    firstName=marks[1].split(" ");
                    highestName=firstName[0];
                }
                if(average<lowest)
                {
                    lowest=average;
                    firstName=marks[1].split(" ");
                    lowestName=firstName[0];
                }
                pw.write(" "+average+"\n");
                id=br.readLine();
            }
            pw.write("Highest "+ highestName + " " + highest + "\n");
            pw.write("Lowest "+ lowestName + " " + lowest + "\n");
            pw.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }
}