Thread: File Input

Hello all

I require a bit of help with my program I am attempting to build. The final purpose of it is to allow a user to, through a keypad on a GUI enter a string of 5 numbers (a zip code), which will be compared to a set of data and output relevant information that pertains to that area. Right now, I think I am having trouble getting the data into the arrays themselves I have set up. I am pretty sure the file is being read in because when I do a System.out.println() inside the while loop ( the loop I have set up to load data from the text files into the arrays) using inputFile.nextLine, or Array[any number] I get a value. But when I do System.out.println(Array[any number]) outside of the while loop, or use i outside or inside the loop I get nothing but null values. To anyone who can help, thankyou.

Here is the gui

import java.awt.* ;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
 
public class MichiganZip extends JFrame {
 
	//Variables
	JTextField zipField;
	JButton zero, one, two, three, four, five, six, seven, eight, nine, submit, clear;
	JPanel keyPad, visual;
	String zip = "";
 
	public MichiganZip() {
		ZipManager zipmanager = new ZipManager();
 
		keyPad = new JPanel();
		keyPad.setLayout(new GridLayout(4, 3));
 
		visual = new JPanel();
		visual.setLayout(new FlowLayout());
 
		zipField = new JTextField(6);
		zipField.setEditable(false);
 
		visual.add(zipField);
 
		zero = new JButton("0");
		one = new JButton("1");
		two = new JButton("2");
		three = new JButton("3");
		four = new JButton("4");
		five = new JButton("5");
		six = new JButton("6");
		seven = new JButton("7");
		eight = new JButton("8");
		nine = new JButton("9");
		submit = new JButton("Submit");
		clear = new JButton("clear");
 
		zero.addActionListener(new ButtonListener());
		one.addActionListener(new ButtonListener());
		two.addActionListener(new ButtonListener());
		three.addActionListener(new ButtonListener());
		four.addActionListener(new ButtonListener());
		five.addActionListener(new ButtonListener());
		six.addActionListener(new ButtonListener());
		seven.addActionListener(new ButtonListener());
		eight.addActionListener(new ButtonListener());
		nine.addActionListener(new ButtonListener());
		submit.addActionListener(new ButtonListener());
		clear.addActionListener(new ButtonListener());
 
		keyPad.add(one);
		keyPad.add(two);
		keyPad.add(three);
		keyPad.add(four);
		keyPad.add(five);
		keyPad.add(six);
		keyPad.add(seven);
		keyPad.add(eight);
		keyPad.add(nine);
		keyPad.add(submit);
		keyPad.add(zero);
		keyPad.add(clear);
 
		Container Gui =  getContentPane();
		Gui.setLayout(new GridLayout(1,1));
		Gui.add(keyPad);
		Gui.add(visual);
 
		setTitle("Michigan Zips") ;
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE) ;
        setSize(500, 300) ;
        setVisible(true) ;
	}
 
	private class ButtonListener implements ActionListener{
		public void actionPerformed(ActionEvent e){
			String actionCommand = e.getActionCommand();
 
			if(actionCommand.equals("1"))
			{
				zip += "1";
				zipField.setText(zip);
			}
 
			if(actionCommand.equals("2"))
			{
				zip += "2";
				zipField.setText(zip);
			}
 
			if(actionCommand.equals("3"))
			{
				zip += "3";
				zipField.setText(zip);				
			}
 
			if(actionCommand.equals("4"))
			{
				zip += "4";
				zipField.setText(zip);
			}
 
			if(actionCommand.equals("5"))
			{
				zip += "5";
				zipField.setText(zip);
			}
 
			if(actionCommand.equals("6"))
			{
				zip += "6";
				zipField.setText(zip);
			}
 
			if(actionCommand.equals("7"))
			{
				zip += "7";
				zipField.setText(zip);
			}
 
			if(actionCommand.equals("8"))
			{
				zip += "8";
				zipField.setText(zip);
			}
 
			if(actionCommand.equals("9"))
			{
				zip += "9";
				zipField.setText(zip);
			}
 
			if(actionCommand.equals("0"))
			{
				zip += "0";
				zipField.setText(zip);
			}
 
			if(actionCommand.equals("clear"))
			{
				zip = " ";
				zipField.setText(zip);
			}
 
		}
	}
 
 
	public static void main(String[] args){
		MichiganZip search = new MichiganZip();
	}
 
 
}

Here is the Zip code manager

import java.io.*;
import java.util.*;
import javax.swing.JOptionPane;
 
public class ZipManager {
 
 
	//Variables
	final static int NUM_ELM = 1300;
	static String Zip[] = new String[NUM_ELM];
	static double cordOne[] = new double[NUM_ELM];
	static double cordTwo[] = new double[NUM_ELM];
	static String State[] = new String[NUM_ELM];
	static String City[] = new String[NUM_ELM];
	int i = 0;
	File file;
	Scanner inputFile;
 
	//attempt to open the file
	{
		try
		{
			file = new File("zipMI.txt");
			inputFile = new Scanner(file);
		}
		catch (FileNotFoundException e)
		{
			JOptionPane.showMessageDialog(null, "File not found" + e);
		}
	}
 
	{
		while (inputFile.hasNext())
		{
			Zip[i] = inputFile.next();
			cordOne[i] = inputFile.nextDouble();
			cordTwo[i] = inputFile.nextDouble();
			State[i] = inputFile.next();
			City[i] = inputFile.next();
			i++;						
		}
	}
 
	public static void main(String[] args){
		for(int i = 0; i < NUM_ELM; i++ ){
		System.out.println(Zip[i]);}
	}
 
}

And the text file with the zip codes is attached as a text file.