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$27_KeyboardEvent.java
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$27_KeyboardEvent.java
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// 27. Write a program to demonstrate different keyboard handling events.
import java.awt.GridLayout;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import javax.swing.JFrame;
import javax.swing.JLabel;
public class $27_KeyboardEvent implements KeyListener {
// Frame
static JFrame frame = new JFrame();
// Lable
static JLabel headingLable = new JLabel("Keyboard Operation");
static JLabel keyPresedLabel = new JLabel("Key Pressed: ");
static JLabel keyReleasedLabel = new JLabel("Key Released");
static JLabel keyTypedLabel = new JLabel("Key Typed: ");
// Methods
// Keyboard Event Management
@Override
public void keyPressed(KeyEvent e) {
keyPresedLabel.setText("Key Pressed: True");
keyReleasedLabel.setText("Key Released: False");
keyTypedLabel.setText("Key Typed: False");
}
@Override
public void keyReleased(KeyEvent e) {
keyPresedLabel.setText("Key Pressed: False");
keyReleasedLabel.setText("Key Released: True");
keyTypedLabel.setText("Key Typed: False");
}
@Override
public void keyTyped(KeyEvent e) {
keyTypedLabel.setText("Key Typed: True");
}
public void appDesign() {
frame.addKeyListener(this);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
frame.setSize(700, 400); // window size
frame.setLayout(new GridLayout(2, 1));
// Add Label to Layout
frame.add(headingLable);
frame.add(keyPresedLabel);
frame.add(keyReleasedLabel);
frame.add(keyTypedLabel);
}
public static void main(String[] args) {
$27_KeyboardEvent app = new $27_KeyboardEvent();
app.appDesign();
}
}