Handling Key Presses

    
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

import javax.swing.JFrame;
import javax.swing.JTextField;

public class Main {
  public static void main(String[] argv) throws Exception {
    JTextField component = new JTextField();
    component.addKeyListener(new MyKeyListener());

    JFrame f = new JFrame();

    f.add(component);
    f.setSize(300, 300);
    f.setVisible(true);

  }
}

class MyKeyListener extends KeyAdapter {
  public void keyPressed(KeyEvent evt) {
    if (evt.getKeyChar() == 'a') {
      System.out.println("Check for key characters: " + evt.getKeyChar());
    }
    if (evt.getKeyCode() == KeyEvent.VK_HOME) {
      System.out.println("Check for key codes: " + evt.getKeyCode());
    }
  }
}

Related examples in the same category

1.	KeyListener, ActionListener Demo 1
2.	KeyListener, ActionListener Demo 2
3.	Key event on frame
4.	Responding to Keystrokes
5.	Key Event Demo
6.	Set java.awt.Container.getFocusTraversalKeys(int id)
7.	KeyStroke.getKeyStroke("F2")
8.	Activating a Keystroke When Any Component in the Window Has Focus
9.	InputMap javax.swing.JComponent.getInputMap(int condition)
10.	Activating a Keystroke When Any Child Component Has Focus
11.	Listening to All Key Events Before Delivery to Focused Component
12.	List keystrokes in the WHEN_ANCESTOR_OF_FOCUSED_COMPONENT input map of the component
13.	List keystrokes in the WHEN_IN_FOCUSED_WINDOW input map of the component
14.	Converting a KeyStroke to a String
15.	Creating a KeyStroke and Binding It to an Action
16.	void InputMap.put(KeyStroke keyStroke, Object actionMapKey)
17.	Map actions with keystrokes
18.	Get key pressed as a key character (which is a Unicode character)
19.	Get key pressed as a key code
20.	Get Key Text
21.	KeyStroke to String
22.	Construct a new key description from a given universal string description
23.	Reads for modifiers and creates integer with required mask

Handling Key Presses : Key Event « Event « Java

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