Building Array with jButton

[Keith Anderson]

Ok, I am trying to build an Array with two jTextFields, and a jButton.
I.E. I press the Button, and it puts these two fields into position r0,c0 and r0,c1.
The issue I am having, is that when I press the button it (as can be expected) iterates threw the code three times.
I get a full Array. If I entered the numbers 34 and 72 I would get

34, 72
34, 72
34, 72

and it would just re-initialize the Array and do it again when I hit the button.
I need it to let me hit the button three times and feed the Array with three different sets of Variables.
I am guessing I just need to get rid of the for loop.

===

 

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
      // First we define float variables.
 for (int r = 0; r < myArray.length; r++) {
      double minCol=0;
      double payCol=0;

      minCol = Double.parseDouble(jTextField1.getText());
      payCol = Double.parseDouble(jTextField2.getText());

// Fill ArrayList stepping through it and setting all values


      myArray[r][0] = minCol;

      myArray[r][1] = payCol;

      System.out.println(myArray[r][0]);

      System.out.println(myArray[r][1]);

      System.out.println();

      jTextArea1.append(String.valueOf("Session " +r+" minutes: " + minCol) +String.valueOf("  Session payout: " + payCol + "$" + "\n"));

        }

[pete stein]

Why are you using a two-dimensional array and not a one-dimensional array? Why do your comments state "ArrayList" when you're using a 2-D array and not an ArrayList? What is the actual requirements for this assignment?

For better help, you may wish to create a small compilable program that demonstrates your problem and that we can run. I can get you started in this like so:

import java.awt.event.*;
import javax.swing.*;

@SuppressWarnings("serial")
public class SwingFu1 extends JPanel {
   private double[][] myArray = new double[1][2];
   private JTextField jTextField1 = new JTextField(10);
   private JTextField jTextField2 = new JTextField(10);
   private JTextArea jTextArea1 = new JTextArea(10, 20);
   private JButton jButton1 = new JButton("My Button");
   
   public SwingFu1() {
      jTextArea1.setEditable(false);
      jTextArea1.setFocusable(false);
      jButton1.addActionListener(new ActionListener() {

         public void actionPerformed(ActionEvent e) {
            jButton1ActionPerformed(e);            
         }
      });
      add(new JScrollPane(jTextArea1));
      add(jTextField1);
      add(jTextField2);
      add(jButton1);
   }

   private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
      // First we define float variables.
      for (int r = 0; r < myArray.length; r++) {
         double minCol = 0;
         double payCol = 0;

         minCol = Double.parseDouble(jTextField1.getText());
         payCol = Double.parseDouble(jTextField2.getText());

         // Fill ArrayList stepping through it and setting all values

         myArray[r][0] = minCol;
         myArray[r][1] = payCol;

         System.out.println(myArray[r][0]);
         System.out.println(myArray[r][1]);
         System.out.println();

         jTextArea1.append("Session " + r + "\n" + "minutes: " + minCol
                  + "\n" + "Session payout: " + payCol + "$" + "\n");
      }
   }
   
   private static void createAndShowUI() {
      JFrame frame = new JFrame("SwingFu1");
      frame.getContentPane().add(new SwingFu1());
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      frame.pack();
      frame.setLocationRelativeTo(null);
      frame.setVisible(true);
   }

   public static void main(String[] args) {
      java.awt.EventQueue.invokeLater(new Runnable() {
         public void run() {
            createAndShowUI();
         }
      });
   }
}

Feel free to modify this to your heart's content.

Much luck!

[Keith Anderson]

Thank you very much for the surrounding code. I am using an IDE, and it would have been very messy if I had cut and pasted the whole thing.
I am using Netbeans, and TextPad++ for development.
===========
Requirements.
===========
I need to generate a program using jButtons, jfields, jArray, jPannel, and jFrame.
I need to create a two dimensional application that will store Money earned and Time spent helping clients.
.. In other words... the two dimensional array--- double array[][].
I need to be able to make a button that quits me out of the application = Easy..
I need to have one button that every time I hit the button it gathers minutes and dollars/cents, and places these items in my array.
===========
I started out with two "for" statements. One for rows, and one for columns.
It seamed more expedient to create just one "for" statement and make the rows static.
=========
Currently whenever I hit the enter info button, it does put the information in the array[0][0],
but the second time I hit the enter information button,
it puts my new information in the same slots of the array[0][0] not iterating to the next row.
Here is the most recent thing I have tried. (I removed the for statement altogether)

   import java.awt.event.*;
import javax.swing.*;

@SuppressWarnings("serial")
public class SwingFu2 extends JPanel
{
	private double[][] myArray = new double[1][2];
	private JTextField jTextField1 = new JTextField(10);
	private JTextField jTextField2 = new JTextField(10);
	private JTextArea jTextArea1 = new JTextArea(10, 20);
	private JButton jButton1 = new JButton("My Button");

public SwingFu2()
{
	jTextArea1.setEditable(false);
	jTextArea1.setFocusable(false);
	jButton1.addActionListener(new ActionListener()
	{

		public void actionPerformed(ActionEvent e)
		{
		jButton1ActionPerformed(e);
		}
	});
		add(new JScrollPane(jTextArea1));
		add(jTextField1);
		add(jTextField2);
		add(jButton1);
}

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt)
{
	// First we define float variables.
	int r = 0;
	double minCol = 0;
	double payCol = 0;

	minCol = Double.parseDouble(jTextField1.getText());
	payCol = Double.parseDouble(jTextField2.getText());

	// Fill two dimentional Array stepping through it and setting all values

	myArray[r][0] = minCol;
	myArray[r][1] = payCol;


	jTextArea1.append("Session " + r + "\n" + "minutes: " + minCol + "\n" + "Session payout: " + payCol + "$" + "\n");
	r++;
}

private static void createAndShowUI()
{
	JFrame frame = new JFrame("SwingFu1");
	frame.getContentPane().add(new SwingFu1());
	frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	frame.pack();
	frame.setLocationRelativeTo(null);
	frame.setVisible(true);
}

	public static void main(String[] args)
	{
		java.awt.EventQueue.invokeLater(new Runnable()
		{
			public void run()
			{
				createAndShowUI();
			}
		});
	}
} 

[Keith Anderson]

In my code, Do I need to move the "for" statement out of the button action section? It only seems to fill up my entire array with the first two items repeated in the array. I do understand why this is happening, but I need to find a way that I can fill in the array , one button push at a time.

[pete stein]

Keith Anderson wrote:
===========
Requirements.
===========
I need to generate a program using jButtons, jfields, jArray, jPannel, and jFrame.
I need to create a two dimensional application that will store Money earned and Time spent helping clients.
.. In other words... the two dimensional array--- double array[][].
I need to be able to make a button that quits me out of the application = Easy..
I need to have one button that every time I hit the button it gathers minutes and dollars/cents, and places these items in my array.

Myself, I would like more details regarding the full requirements.What is held by what JTextField, what is stored in the 2D array. The details will lead to the solution.