How to retrieve arrays from a file.

Question

If i were to save 5 arrays to a file like this.....
DataOutputStream output;
     DataInputStream input;
     Date today = new Date();
     String filename = "phonebook";
private String name[] = {""};
     private String surname[] = {""};
     private String home[] = {""};
     private String work[] = {""};
     private String cell[] = {""};
     try
               output = new DataOutputStream(new FileOutputStream(filename));
          catch(IOException io)
               JOptionPane.showMessageDialog(null,"This program could not create a storage location. Please check the disk drive and the tun the program again.","Error",JOptionPane.ERROR_MESSAGE);
               System.exit(1);
public void save()
          try
               for(int i=0; i < name.length; i++)
                    output.writeUTF(name);
                    output.writeUTF(surname[i]);
                    output.writeUTF(work[i]);
                    output.writeUTF(home[i]);
                    output.writeUTF(cell[i]);
               JOptionPane.showMessageDialog(null,"Data succesfully saved to file.","Information message",JOptionPane.INFORMATION_MESSAGE);
          catch(IOException io)
               System.exit(1);
     }And then I want to use them again on my startup. How would I go about initialising them back into thier origianl arrays. What i mean is I want the arrays to contain theier previous saved values. Is this possible.
I tried to do it like this but it wont work. I get no errors. It just wont return and strings at all.try
               input = new DataInputStream(new FileInputStream(filename));
          catch(IOException io)
               JOptionPane.showMessageDialog(null,"Could not find the correct file to read data from.","Error",JOptionPane.ERROR_MESSAGE);
          try
               for(int i=0; i< name.length; i++)
                    name[i]=input.readUTF();
                    surname[i]=input.readUTF();
                    work[i]=input.readUTF();
                    home[i]=input.readUTF();
          cell[i]=input.readUTF();
          catch(IOException io)
          }Or is it better to create a seperate file for each array?
Edited by: Yucca on Mar 23, 2008 2:24 PM                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               

Answer 1

Any help here please.
Edited by: Yucca on Mar 23, 2008 6:34 PM