Thread: Array Output in JTextField

I am having some trouble with outputting data from an array into a text field. When I just do the standard println output everything works fine but it will not output into the text field. I have included the code below.

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
 
public class arrayExample extends JFrame
{
  private JPanel contentPanel;
  private JLabel lblInput;
  private JTextField txtInput;
  private JTextField txtOutput;
  private JButton btnShow;
  private JButton btnAdd;
  private String temp; //the variable of the input box
  private int counter = 0;
 
  String student [] = new String [10];
 
  private void add (Container con, Component widget, int left, int top, int width,
                    int height)
  {
    widget.setBounds(left, top, width, height);
    con.add(widget);
  }
 
  arrayExample()
  {
    contentPanel = (JPanel)getContentPane();
    contentPanel.setLayout(null);
 
    lblInput = new JLabel ("Enter Name");
    add(contentPanel, lblInput, 10, 0, 100, 20);
 
    txtInput = new JTextField();
    add(contentPanel, txtInput, 0, 30, 100, 20);
 
    btnAdd = new JButton ("Add Name");
    add(contentPanel, btnAdd, 10, 70, 80, 20);
 
    btnShow = new JButton ("Show Names");
    add(contentPanel, btnShow, 10, 110, 110, 20);
 
    txtOutput = new JTextField();
    add(contentPanel, txtOutput, 200, 0, 200, 300);
 
    //details of the window
    setTitle("Class List");
    setSize(500, 500);
    setLocation (new Point (150, 150));
    setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    setVisible(true);
 
    //adds the input from text box into the array
    btnAdd.addActionListener(new ActionListener()
    {
      public void actionPerformed(ActionEvent add)
      {
        temp = txtInput.getText();
        student[counter] = temp;
        counter = counter + 1;
        txtInput.setText("");
      }
    });
 
    //controls the function of the Show button
    //prints out the information put into the input field
    btnShow.addActionListener(new ActionListener()
    {
      public void actionPerformed(ActionEvent add)
      {
        for (int i = 0; i < student.length; i++)
        {
          txtOutput.setText(student[i]);
          System.out.println(i + ": " + student[i]);
        }
      }
    });
 
  }
 
  public static void main (String [] args)
  {
    new arrayExample();
  }
}