KeyTest.java Source code

Introduction

Here is the source code for KeyTest.java

Source

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;

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

public class KeyTest {
    public static void main(String args[]) {
        JFrame frame = new JFrame("Key Listener");
        Container contentPane = frame.getContentPane();

        KeyListener listener = new KeyListener() {
            public void keyPressed(KeyEvent e) {
                dumpInfo("Pressed", e);
            }

            public void keyReleased(KeyEvent e) {
                dumpInfo("Released", e);
            }

            public void keyTyped(KeyEvent e) {
                dumpInfo("Typed", e);
            }

            private void dumpInfo(String s, KeyEvent e) {
                System.out.println(s);
                int code = e.getKeyCode();
                System.out.println("\tCode: " + KeyEvent.getKeyText(code));
                System.out.println("\tChar: " + e.getKeyChar());
                int mods = e.getModifiersEx();
                System.out.println("\tMods: " + KeyEvent.getModifiersExText(mods));
                System.out.println("\tLocation: " + location(e.getKeyLocation()));
                System.out.println("\tAction? " + e.isActionKey());
            }

            private String location(int location) {
                switch (location) {
                case KeyEvent.KEY_LOCATION_LEFT:
                    return "Left";
                case KeyEvent.KEY_LOCATION_RIGHT:
                    return "Right";
                case KeyEvent.KEY_LOCATION_NUMPAD:
                    return "NumPad";
                case KeyEvent.KEY_LOCATION_STANDARD:
                    return "Standard";
                case KeyEvent.KEY_LOCATION_UNKNOWN:
                default:
                    return "Unknown";
                }
            }
        };

        JTextField text = new JTextField();
        text.addKeyListener(listener);
        contentPane.add(text, BorderLayout.NORTH);
        frame.pack();
        frame.show();
    }
}