Key « JPanel « Java Swing Q&A

1. JApplet/JPanel not receiving KeyListener events! stackoverflow.com

I cannot get my JPanel within my JApplet to receive keyboard events. I CANNOT FATHOM why! Note that...

Clicking the panel (with mouse) before typing makes no difference. This is by far the ...

2. How do I change the background color of a frame in Java from another class? stackoverflow.com

I have the following:

import javax.swing.JFrame;

public class Directions {

    public Directions(){
        JFrame frame = new JFrame("Direction");
       ...

3. KeyListener problem stackoverflow.com

In my apllication i am using a jpanel in which i want to add a key listener. I did it. But it doesnot work. Is it because i am using a swingworker ...

4. jpanel keylistener stackoverflow.com

yet another java question. I am trying to add a key listener that holds a jtabbedpane.
it should switch the tabs when ctrl + tab is received.
but the keypressed event is ...

5. KeyListener not being triggered after I swap JPanels stackoverflow.com

Im making a game and Im having it so that when the user presses "I" in the game, the game panel is set to invisible while it adds the Inventory panel ...

6. How to get on keyPressed in a JPanel CTRL+m? stackoverflow.com

I'm trying to implement a JPopupMenu over a text editor component. It should be activated on CTRL+m. Can I do that inside

@Override
public void keyPressed(KeyEvent arg0) {

}

and if yes, how? Because ...

7. Java - Waiting for some type of key press to continue stackoverflow.com

What is the best way to implement a "press x to continue" type of thing in Java? Specifically, I have a custom class which extends JFrame and a custom class which extends ...

8. KeyListener on JPanel randomly unresponsive stackoverflow.com

I'm having trouble with the default Java KeyListener in my project. I noticed that the KeyListener doesn't seem to get KeyEvents forwarded sometimes when I start. Symptoms of the problem: When starting the application ...

9. KeyEvent problem on a JPanel coderanch.com

private class gamePanel extends JPanel implements Runnable, KeyListener{ Image hero_back=Toolkit.getDefaultToolkit().getImage("hero.gif"); int x=200; int y=400; Thread firstThread; boolean running=false; public gamePanel(){ addKeyListener(this); requestFocus(); } public void paintComponent(Graphics g){ Graphics2D g2D=(Graphics2D)g; g2D.setColor(Color.black); g2D.fillRect(0, 0, getWidth(), getHeight()); g2D.drawImage(hero_back, x, y, this); } public void moveNorth(){ if(running==false){ firstThread=new Thread(this); firstThread.start(); running=true; } } public void moveStop(){ running=false; } public void run(){ while(running==true){ y--; repaint(); try ...

10. Mouse and Key Listeners don't work on JPanel coderanch.com

So it seems that your problem only occurs in specified situations, situations that we won't be able to reproduce without seeing your code I'll bet. My recommendation goes back to Darryl's: please post an SSCCE. You'll find a helpful link on how to create this creature and why it's important in Darryl's post again. For instance, this is my SSCCE of ...

11. Facing problem with KeyListener for a frame having multiple panels coderanch.com

I'm building the Shuffle game of 4X4 grid. I think you know about it I have completed it using single panel of 16 buttons. But now I'm facing problem when I thought of extending the application by adding two buttons in a separate panel. Now the KeyListener is not at all working. I searched the forum and got some help from ...

12. Listening KeyEvent from two JPanel java-forums.org

Ok, from my previous post, I managed what I wanted to do for inner issues. But now I switched to CardLayout for a different game. I again have many JPanels and a game which itself is a JPanel too. When I switch to Game panel, due to hierarchy I cannot go to previous panel. This time I have to hold Game ...