One JTextField stores and updates text, the other doesn't - text

Question

So, I made a class that takes arrays and calculates a value from them. I then decided (unknowingly) to incorporate it into a GUI interface. All went well until I noticed this strange error; one of the jtextfields (prarie) would not store text while the other (yard) does.
I looked around and found my problem similiar to mine on this site;
Updating text in a JTextField
But he had one that doesn't work at all, where I have one that works and one that doesn't.
The Code is here (it's a bit long, but most of it is GUI), so hold your breath!:
import java.awt.GridLayout;
import javax.swing.Box;
import javax.swing.JCheckBox;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
public class Window {
/**
* #param args
*/
private static int numb;
private static double micro, centi;
private static JTextField[] yard,prarie;
private static double[] charges,distances;
public static void main(String[] args)
{
//create a small dialog window to take in number of charged objects
JPanel startup = new JPanel();
JTextField many = new JTextField(5);
startup.add(many);
int result = JOptionPane.showConfirmDialog(null,startup , "Please Enter How Many Charged Objects are Being Evaluated", JOptionPane.OK_CANCEL_OPTION);
many.requestFocusInWindow();
//once ok is clicked, then the number input will be stored under 'numb'
//then proceed to inputFields
if (result == JOptionPane.OK_OPTION)
{
numb = Integer.parseInt(many.getText());
inputFields();
}
}
//this window opens the various JTextFields for input
public static void inputFields()
{
//top JTextFields
yard = new JTextField[numb];
JPanel chargePanel = new JPanel();
for(int x=0;x<numb;x++)
{
yard[x] =new JTextField(5);
chargePanel.add(new JLabel("Charge "+ Integer.toString(x+1)+":"));
chargePanel.add(yard[x]);
chargePanel.add(Box.createVerticalStrut(15)); // a spacer
}
//bottom JTextFields
prarie = new JTextField[numb-1];
JPanel meterPanel = new JPanel();
for(int x=0;x<numb-1;x++)
{
prarie[x]=new JTextField(5);
meterPanel.add(new JLabel("Meters "+ Integer.toString(x+1)+":"));
meterPanel.add(new JTextField(5));
meterPanel.add(Box.createVerticalStrut(15)); // a spacer
}
//JCheckBoxes
JCheckBox isMicro = new JCheckBox("Charges are in terms of microCoulombs");
JCheckBox isCm = new JCheckBox("Distances are in terms of centiMeters");
JPanel chechBox = new JPanel();
chechBox.add(isMicro);
chechBox.add(Box.createVerticalStrut(20));
chechBox.add(isCm);
//Paste them all together into one window
GridLayout gufi = new GridLayout(3,1);
JPanel host = new JPanel(gufi);
host.add(chargePanel);
host.add(meterPanel);
host.add(chechBox);
int result1 = JOptionPane.showConfirmDialog(null, host, "Please Enter Charge and Distance Values", JOptionPane.OK_CANCEL_OPTION);
//if ok is clicked, then go to 'printArr()' to print the JTextFields
//then go to assign the values from the JTextFields to private double arrays 'yard' and 'prarie'
if (result1 == JOptionPane.OK_OPTION)
{
micro = (isMicro.isSelected())? Math.pow(10, -6): 1;
centi = (isCm.isSelected())? .01: 1;
printArr();
assign();
}
}
//a makeshift method to print the value from the JTextFields
//to fix the problem of why prarie wouldn't store numbers
public static void printArr()
{
System.out.println("Charges are:");
for(int x=0;x<numb;x++)
System.out.print(yard[x].getText() + " ");
System.out.println("Distances are:");
for(int x=0;x<numb-1;x++)
System.out.print(prarie[x].getText() + " ");
}
//assigns values from JTextFields to the private double arrays 'yard' and 'prarie'
public static void assign()
{
try {
charges = new double[numb];
for(int x=0;x<numb;x++)
charges[x]=micro*Double.parseDouble(yard[x].getText().trim());
distances = new double[numb-1];
for(int x=0;x<numb-1;x++)
distances[x]=centi*Double.parseDouble(prarie[x].getText().trim());
} catch (NumberFormatException e) {
e.printStackTrace();
//inputFields();
}
calculate();
}
public static void calculate()
{
JPanel sample = new JPanel();
JTextField whichOne = new JTextField(5);
sample.add(whichOne);
int result = JOptionPane.showConfirmDialog(null,sample , "Please Enter Which Charged Object thy Wishs For", JOptionPane.OK_CANCEL_OPTION);
whichOne.requestFocusInWindow();
if (result == JOptionPane.OK_OPTION)
{
int target = Integer.parseInt(whichOne.getText());
}
}
}
Anyone who runs the code and takes the time to enter dummy values will see that 'yard' stores values while 'prarie' does not. Why is this?
*I'm pretty sure I'm overlooking obvious (as always).

Answer 1

Change:
meterPanel.add(new JTextField(5));
to:
meterPanel.add(prarie[x]);
in the for loop for the prarie textfields