import java.io.*;import java.util.*;public class Driver { /** * @param args */ public static void main(String[] args) { Employees list = new Employees(); try { /* add code here to open the input file called * hrdb.txt and create a BufferedReader object. * Next, use a while loop to read data from the * file one line at a time. Within the loop, use * a StringTokenizer to break up the string input * pieces. Note that id, lastname, and firstname * are strings and salary is an integer. Next, * use these four values to create a new Person * object and try to call the list's addEmployee * method. Note the types of exceptions that this * method might throw. Remember also that creating * a FileReader can throw a FileNotFoundException * and creating a BufferedReader throws the more * general IOException, a parent of BufferedReader. * */ BufferedReader in = new BufferedReader(new FileReader("hrdb.txt")); String line = null; while((line = in.readLine()) != null) { /** * StringTokenizer is not very efficient, String.split is much * better :) */ StringTokenizer st = new StringTokenizer(line, ","); Person p = new Person( while( st.hasMoreTokens() ) { st.nextToken() ; }, while( st.hasMoreTokens() ) { st.nextToken() ; }, while( st.hasMoreTokens() ) { st.nextToken() ; },// st.nextToken(),// st.nextToken(), // st.nextToken(), Integer.parseInt(st.nextToken())); list.addEmployee(p); } } catch (FileNotFoundException ex) { System.err.println(ex); System.exit(1); } catch (IOException ex) { System.err.println(ex); System.exit(1); } catch (DuplicateEmployeeException ex) { ex.printStackTrace(); } list.printEmployeeList(); }}