ATM Program HELP

[MasFlowKiller]

ok so i have this file and in it, it has:
lastName firstName accountNumber accountPassword accountBalance

so i want my program to ask the user for the accountNumber and the accountPassword and to go into the file i have and check if they match and if the do it prints the firstName and lastName.

so far i cant make it check and match accountNumber and the accountPassword and it prints everything in the file, i know i have to implement so type of array

atmFile(String lastName, String firstName, int accountNumber,int accountPassword, double accountBalance) but i just cant make it work, any tips?

[CJSLMAN]

Please post the code you have and rememeber to use the "code" button above (#).

CJSL

[MasFlowKiller]

wat code button?

[MasFlowKiller]

import java.util.Scanner;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.io.FileNotFoundException;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.io.FileOutputStream;
import java.io.File;
import java.util.Scanner;
import java.util.List;
import java.util.ArrayList;
public class ATM
{
private String accountFile;
private String password;
private String lastName;
private String firstName;
private int accountNumber;
private int accountPassword;
private double accountBalance;

void set(String lastName, String firstName, int accountNumber,int accountPassword, double accountBalance) throws FileNotFoundException
{
FileInputStream inFile;
inFile = new FileInputStream ("C:\\Documents and Settings\\fortind\\My Documents\\ATM\\ATM.txt");
System.out.println(lastName);

}
public void read()
{

FileInputStream inFile;
try
{
// Open an input stream
inFile = new FileInputStream ("C:\\Documents and Settings\\fortind\\My Documents\\ATM\\ATM.txt");

// Read a line of text
System.out.println( new DataInputStream(inFile).readLine() );

// Close our input stream
inFile.close();
}
// Catches any error conditions
catch (IOException e)
{
System.err.println ("Unable to read from file");
System.exit(-1);
}

}
public void write()
{

// Stream to write file
FileOutputStream outFile;

try
{
// Open an output stream
outFile = new FileOutputStream ("C:\\Documents and Settings\\fortind\\My Documents\\ATM\\ATM.txt");

// Print a line of text
new PrintStream(outFile).println ("Test");

// Close our output stream
outFile.close();
}
// Catches any error conditions
catch (IOException e)
{
System.err.println ("Unable to write to file");
System.exit(-1);
}

}

}

[MasFlowKiller]

public class ATMDemo {
public static void main(String[] args)
{
ATM A1 = new ATM();
A1.read();
//A1.write();
A1.set(null, null, 0, 0, 0);



}
}

[MasFlowKiller]

i just dont know what to do next, the rest of the code depends on the program reading the file right