Need help getting information out of array and into text/object files

Question

Im having alot of trouble with this i have the classes for the array, text reader and writer, and object reader and writer mostly done. I originally had a getInfo method in my object and text classes to input the data needed, but that wasnt how the instructor wanted. So my question is how do i take the infomation in the array in class studentarray and send that information to the text and object classes? I have looked online for an example and cant seem to find one that looks like it would work. I am pretty sure what i need will be put in the class StudentArray
here is requirements i havent figured out how to implement
- read student records from a �text� file
- write student records into a �text� file (new data after sorting)
- read student records from an �object� file
- write student records into an �object� file (new data after sorting)
I have sorting methods below in StudentArray just didnt post them
public class StudentArray {
private static Scanner input = new Scanner(System.in);
private static student sArray[] = new student[5];
public static void insert() throws NegativeIDException
for(int i = 0; i < 5; i++)
System.out.println("Please enter firstname:");
String Fname = input.next();
System.out.println("Please enter lastname:");
String Lname = input.next();
System.out.println("Please enter id:");
int Id = 0;
try
Id = input.nextInt();
NegativeIDException nide = new NegativeIDException("No negative number for id.");
if(Id < 0)
throw nide;
scanner.nextLine();
System.out.println("you must enter a positive number try again");
catch(InputMismatchException ime)
System.err.printf("\nException: %s\n", ime);
scanner.nextLine();
System.out.println("you must enter an integer try again");
System.out.println("Please enter year admitted:");
int Admitted = 0;
try
Admitted = input.nextInt();
NegativeIDException nide = new NegativeIDException("No negative number for id.");
if(Admitted < 0)
throw nide;
scanner.nextLine();
System.out.println("you must enter an integer try again");
catch(InputMismatchException ime)
System.err.printf("\nException: %s\n", ime);
scanner.nextLine();
System.out.println("you must enter an integer try again");
System.out.println("Please enter Gpa:");
double Gpa = input.nextDouble();
int t = 0;
          int q = 0;
          System.out.println("Please select your track");
               System.out.println("1 for doctoral student");
               System.out.println("2 for graduate student");
               System.out.println("3 for major student");
               System.out.println("4 for minor student");
               t = input.nextInt();
               if (t == 1)
                         System.out.println( "Please select your doctoral topic");
                         System.out.println("1 for Video Games");     
                         System.out.println("2 for CPU History");     
                         System.out.println("3 for Other");     
                         int c = input.nextInt();                         
                         String diss = "";
                         if (c == 1)
                              diss = "Video Games";     
                         else if (c == 2)
                              diss = "CPU History";
                         else if (c == 3)
                              diss = "Other";
                         sArray[i] = new CSDoctStudent(Fname, Lname, Id, Admitted, Gpa, diss);
                         q++;                              
                    else if (t == 2)
                    System.out.println( "Please enter the number for your graduate course");
                    System.out.println("1 for Software Engineering");     
                    System.out.println("2 for Theory");     
                    System.out.println("3 for Other");     
                    int b = input.nextInt();
                    String Theory = "";
                    if (b == 1)
                         Theory = "Software Engineering";     
                    else if (b == 2)
                         Theory = "Theory";
                    else if (b == 3)
                         Theory = "Other";
                    sArray[i] = new CsGradStudent(Fname, Lname, Id, Admitted, Gpa, Theory);
               q++;     
                    else if (t == 3)
                         System.out.println( "Please enter the number for your major course");
                         System.out.println("1 for Hardware");     
                         System.out.println("2 for IS");     
                         System.out.println("3 for Theory");     
                         int m = input.nextInt();
                         String track = "";
                         if (m == 1)
                         track = "Hardware";
                    else if (m == 2)
                         track = "IS";
                    else if (m == 3)
                         track = "Theory";
                         sArray[i] = new CSMajorStudent(Fname, Lname, Id, Admitted, Gpa, track);
                         q++;     
               else if ( t == 4)
                         System.out.println( "Please enter the number for your minor course");
                         System.out.println("1 for Computer Application");     
                         System.out.println("2 for Multimedia");     
                         System.out.println("3 for Web Technology");
                         int d = input.nextInt();
                         String Hardware = "";
                         if (d == 1)
                              Hardware = "Computer Application";     
                         else if (d == 2)
                              Hardware = "Multimedia";
                         else if (d == 3)
                              Hardware = "Web Technology";
                         sArray[i] = new CSMinorStudent(Fname, Lname, Id, Admitted, Gpa, Hardware);
                         q++;     
               else;
sArray= new student(Fname,Lname,Id,Admitted, Gpa);
//trying to write it to a text file with this
import java.io.PrintWriter;
import java.util.Scanner;
import java.io.File;
import java.io.FileNotFoundException;
public class TStream {
private Scanner input = null;
private PrintWriter output = null;
private student [] sArray = new student[5];
public TStream()
public void write()
try
output = new PrintWriter("tdatabase.txt");
for(int i = 0; i < 5; i++)
output.print(sArray[i].getFname() + "\t");
output.print(sArray[i].getLname() + "\t");
output.print(sArray[i].getId() + "\t");
output.print(sArray[i].getAdmitted() + "\t");
output.print(sArray[i].getGpa() + "\t");
output.println();
output.close();
catch(FileNotFoundException fnfe)
System.err.printf("\nException: %s\n", fnfe);
System.out.println("Can not open this file.\n");
public void read()
try
input = new Scanner(new File("tdatabase.txt"));
for(int i = 0; i < 5; i++)
String Fname = input.next();
String Lname = input.next();
int Id = input.nextInt();
int Admitted = input.nextInt();
double Gpa = input.nextDouble();
sArray[i] = new student(Fname,Lname,Id,Admitted,Gpa);
input.close();
catch(FileNotFoundException fnfe)
System.err.printf("\nException: %s\n", fnfe);
System.out.println("Can not open this file.\n");

Answer 1

Use the [url http://forum.java.sun.com/help.jspa?sec=formatting]Code Formatting Tags so the code retains its original formatting.