Thread: Stopping the entries in a JFrame

import javax.swing.*;
import java.util.*;
import java.awt.*;
import java.awt.event.*;
import java.io.IOException;
 
 
public class Array extends JFrame{
 
    private JTextField number = new JTextField(10);
    private JLabel result;
    int num;
    ArrayList<Integer> list = new ArrayList<>();
 
 
    public static void main(String[] args){
 
        Array frame = new Array();
        frame.setTitle("Collections");
        frame.setSize(700, 300);
        frame.setLocationRelativeTo(null);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
 
 
    }
 
    public Array() {
 
 
        add(new JLabel("You will enter 5 integers."), BorderLayout.NORTH);
        setLayout(new FlowLayout(FlowLayout.LEFT, 10,20));
        add(new JLabel("Enter a number and click the enter button:"));
        add(number);
 
        JButton jbtEnter = new JButton("Enter");
        jbtEnter.setToolTipText("This will store your number in the program");
        add(jbtEnter);
 
        jbtEnter.addActionListener(new EnterListener());
 
 
        JButton jbtDisplay = new JButton("Display");
        jbtDisplay.setToolTipText("This will display all the integers in numberical order");
        add(jbtDisplay);
 
        jbtDisplay.addActionListener(new DisplayListener());
 
        result = (new JLabel(""));
        add (result);
}
    class EnterListener implements ActionListener{
        @Override
        public void actionPerformed(ActionEvent e){
 
 
            try{
            int i = 0; 
            if (i < 5){
 
 
            num = Integer.parseInt(number.getText());
            list.add(num);
            number.setText(null);
            i++;
 
            }
            catch (IndexOutOfBoundsException ex){
                JOptionPane.showMessageDialog(null, "Error. You cannot exceed the limit of 5 entries.  click other button.", "Error", JOptionPane.ERROR_MESSAGE);
            }
 
         }
    }
 
 
    class DisplayListener implements ActionListener{
 
        @Override
        public void actionPerformed(ActionEvent e) {
 
 
            Collections.sort(list);
            result.setText("The numbers you have entered, listed in numerical order is: " + list );
            }
 
    }
 
}

How can I make the user stop entering after 5 entries? the catch is to tell the user they can longer add entries.

Also at java-forums.org

There's one big thing I noticed. The variable i is being defined inside that listener. It is set to 0.

Every time they click the button, it will be 0 again. If you changed it to be a class variable or something instead and set it to 0 in the constructor, it would eventually reach 5, though it's not, I think, ever going to throw an IndexOufOfBoundsException.

Just have an if and else there instead of the try catch I think.