Debug frame : Unit Test « Development Class « Java

Debug frame

Debug frame
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;

public class DebugWinTest extends JFrame implements ActionListener {
  private JButton aButton = new JButton("button");

  private DebugWin dw = new DebugWin();

  public DebugWinTest() {
    setSize(100, 100);
    addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {

    JPanel pane = new JPanel();



  public void actionPerformed(ActionEvent evt) {
    dw.print("Event = " + evt);

  public static void main(String[] args) {
    JFrame f = new DebugWinTest();;

  class DebugWin extends JFrame {
    private JTextArea output = new JTextArea();

    public void print(Object ob) {
      output.append("\n" + ob);

    public DebugWin() {
      getContentPane().add(new JScrollPane(output), "Center");
      setSize(300, 200);
      setLocation(200, 200);
      addWindowListener(new WindowAdapter() {
        public void windowClosing(WindowEvent e) {

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