[hardwired]

This blocks input at the console

Code:

int arraySize = console.nextInt();

Code:

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

public class AnArrayTest {
    Scanner console = new Scanner(System.in);
    JFrame frame;
  
    public AnArrayTest() {
        frame = new JFrame("Array");
        JButton button = new JButton("Enter Here");
        button.addActionListener(new MyAction());
        JPanel panel = new JPanel();
        panel.add(button);
        frame.add(panel);
        frame.setSize(400, 400);
        frame.setVisible(true);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }

    public class MyAction implements ActionListener{
        public void actionPerformed(ActionEvent e){
            String input = JOptionPane.showInputDialog(null,
                                      "Enter the size of the array: ");
            int arraySize = //console.nextInt();
                            Integer.parseInt(input.trim());
            int[] list = new int[arraySize];
            for (int arrayIndex = 0; arrayIndex < list.length; arrayIndex++) {
                list[arrayIndex] = arraySize - arrayIndex;
            }
            String values = Arrays.toString(list);
            JOptionPane.showMessageDialog(frame, values + " " +
                                  "is your number", "Your Silly Numbers", 
                                   JOptionPane.INFORMATION_MESSAGE);
            }
        }

    public static void main(String[] args){
        new AnArrayTest();
    }
}