Capturing KeyEvents

Capturing KeyEvents

How can I capture KeyEvents in a Frame that doesn’thave any TextFields or TextAreas?

To enable a particular AWTEvent in a Component it suffices to add alistener for that event. When the first listener for a particularevent type is registered, that event automatically becomes enabled forthe component. So, all you have to do is add a KeyListener as in thefollowing example:

import java.awt.*;import java.awt.event.*;public class KeyDemo {  public static void main(String[] args) {    Frame frame = new Frame("foo");    WindowListener exitListener;    exitListener = new WindowAdapter() {      public void windowClosing(WindowEvent e) {        Window window = e.getWindow();        window.setVisible(false);        window.dispose();        System.exit(0);      }    };    frame.addWindowListener(exitListener);    frame.addKeyListener( new KeyListener() {	public void keyPressed(KeyEvent e) {	  System.out.println("keyPressed: " + e.toString());	}	public void keyReleased(KeyEvent e) {	  System.out.println("keyReleased: " + e.toString());	}	public void keyTyped(KeyEvent e) {	  System.out.println("keyTyped: " + e.toString());	}      });          frame.setSize(400, 400);    frame.setVisible(true);  }}
See also  Who are the Modern GPU Cloud Providers?

About Our Editorial Process

At DevX, we’re dedicated to tech entrepreneurship. Our team closely follows industry shifts, new products, AI breakthroughs, technology trends, and funding announcements. Articles undergo thorough editing to ensure accuracy and clarity, reflecting DevX’s style and supporting entrepreneurs in the tech sphere.

See our full editorial policy.

About Our Journalist