public void actionPerformed(ActionEvent even) {
Object respuesta = even.getSource(); // se esta diciendo que respuesta sea un objeto.
if (respuesta == b1) {
txt = new JTextField(4 + 4);
setTitle("sumar");
} else if (respuesta == b2) {
// txt=new JTextField (4-1);
txt.setActionCommand("4");
setTitle("Restar");
}
// cambiar el boton b2
b2.setActionCommand("LOL");
b2.setLabel(b2.getActionCommand());
repaint();
}
private void initComponents() {
handler = new CharacterEventHandler();
displayCanvas = new AnimatedCharacterDisplayCanvas();
feedbackCanvas = new CharacterDisplayCanvas(this);
quitButton = new JButton();
startButton = new JButton();
stopButton = new JButton();
score = new ScoreLabel(null, this);
Container pane = getContentPane();
pane.add(displayCanvas, BorderLayout.NORTH);
pane.add(feedbackCanvas, BorderLayout.CENTER);
JPanel p1 = new JPanel();
p1.setLayout(new BorderLayout());
score.setText(" ");
score.setFont(new Font("MONOSPACED", Font.BOLD, 30));
p1.add(score, BorderLayout.CENTER);
JPanel p2 = new JPanel();
startButton.setLabel("Start");
stopButton.setLabel("Stop");
stopButton.setEnabled(false);
quitButton.setLabel("Quit");
p2.add(startButton);
p2.add(stopButton);
p2.add(quitButton);
p1.add(p2, BorderLayout.EAST);
pane.add(p1, BorderLayout.SOUTH);
addWindowListener(
new WindowAdapter() {
public void windowClosing(WindowEvent evt) {
quit();
}
});
feedbackCanvas.addKeyListener(
new KeyAdapter() {
public void keyPressed(KeyEvent ke) {
char c = ke.getKeyChar();
if (c != KeyEvent.CHAR_UNDEFINED) newCharacter((int) c);
}
});
startButton.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent evt) {
producer = new RandomCharacterGenerator();
displayCanvas.setCharacterSource(producer);
score.resetGenerator(producer);
producer.start();
displayCanvas.setDone(false);
Thread t = new Thread(displayCanvas);
t.start();
startButton.setEnabled(false);
stopButton.setEnabled(true);
feedbackCanvas.setEnabled(true);
feedbackCanvas.requestFocus();
score.resetScore();
}
});
stopButton.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent evt) {
startButton.setEnabled(true);
stopButton.setEnabled(false);
producer.setDone();
displayCanvas.setDone(true);
feedbackCanvas.setEnabled(false);
}
});
quitButton.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent evt) {
quit();
}
});
pack();
}