Contoh Program KeyEvent di Java

Hasil setelah dikompile

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

public class KeyEventTest extends JFrame implements KeyListener {
private String baris1="", baris2="", baris3="";
private JTextArea textArea;

public KeyEventTest() {
super ("Mencoba Key Event");

textArea = new JTextArea (10,15);
textArea.setText("Tekan sembarang tombol di keyboard...");
textArea.setEnabled(false);
textArea.setDisabledTextColor(Color.BLACK);
getContentPane().add(textArea);

addKeyListener (this);

setSize (300,150);
setLocationRelativeTo(null);
setVisible(true);
}

public void keyPressed (KeyEvent e) {
baris1 = "Tombol yang ditekan : " + e.getKeyText(e.getKeyCode());
setLines2and3 (e);
}

public void keyReleased (KeyEvent e) {
baris1 = "Tombol yang dilepas : " + e.getKeyText(e.getKeyCode());
setLines2and3 (e);
}

public void keyTyped (KeyEvent e) {
baris1 = "Tombol yang ditulis : " + e.getKeyChar();
setLines2and3 (e);
}

private void setLines2and3 (KeyEvent e) {
baris2 = "This key is "+ (e.isActionKey() ? "" : "not ") + "an action key";
String temp = e.getKeyModifiersText(e.getModifiers());
baris3 = "Modifier key pressed : " + (temp.equals("") ? "none" : temp);
textArea.setText(baris1 + "\n" + baris2 + "\n" + baris3 + "\n");
}

public static void main (String args[]) {
    KeyEventTest test = new KeyEventTest();
    test.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
}

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