| Methods Summary |
|---|
| public void | actionPerformed(java.awt.event.ActionEvent e)Handle the button click.
//Clear the text components.
displayArea.setText("");
typingArea.setText("");
//Return the focus to the typing area.
typingArea.requestFocus();
|
| protected void | displayInfo(java.awt.event.KeyEvent e, java.lang.String s)
String charString, keyCodeString, modString, tmpString;
char c = e.getKeyChar();
int keyCode = e.getKeyCode();
int modifiers = e.getModifiers();
if (Character.isISOControl(c)) {
charString = "key character = "
+ "(an unprintable control character)";
} else {
charString = "key character = '"
+ c + "'";
}
keyCodeString = "key code = " + keyCode
+ " ("
+ KeyEvent.getKeyText(keyCode)
+ ")";
modString = "modifiers = " + modifiers;
tmpString = KeyEvent.getKeyModifiersText(modifiers);
if (tmpString.length() > 0) {
modString += " (" + tmpString + ")";
} else {
modString += " (no modifiers)";
}
displayArea.append(s + newline
+ " " + charString + newline
+ " " + keyCodeString + newline
+ " " + modString + newline);
|
| public void | init()
JButton button = new JButton("Clear");
button.addActionListener(this);
typingArea = new JTextField(20);
typingArea.addKeyListener(this);
displayArea = new JTextArea();
displayArea.setEditable(false);
JScrollPane scrollPane = new JScrollPane(displayArea);
scrollPane.setPreferredSize(new Dimension(375, 125));
JPanel contentPane = new JPanel();
contentPane.setLayout(new BorderLayout());
contentPane.add(typingArea, BorderLayout.NORTH);
contentPane.add(scrollPane, BorderLayout.CENTER);
contentPane.add(button, BorderLayout.SOUTH);
setContentPane(contentPane);
|
| public void | keyPressed(java.awt.event.KeyEvent e)Handle the key pressed event from the text field.
displayInfo(e, "KEY PRESSED: ");
|
| public void | keyReleased(java.awt.event.KeyEvent e)Handle the key released event from the text field.
displayInfo(e, "KEY RELEASED: ");
|
| public void | keyTyped(java.awt.event.KeyEvent e)Handle the key typed event from the text field.
displayInfo(e, "KEY TYPED: ");
|
