Listener « Button « Java Swing Q&A

1. Accessing a "nameless" Jbutton in an anonymous class from another anonymous class? stackoverflow.com

alright I know this sounds a little far-fetched, but let me explain. I created 26 JButtons in an anonymous actionListener labeled as each letter of the alphabet.

    for ...

2. JPanel not listening to key event when there is a child component with JButton on it stackoverflow.com

I'm working on a map editor for my college project. And I had a problem that the map panel is not listening key event while it should. This happens when I add ...

3. Faulty JButton event listener stackoverflow.com

I have created in my Java Swing application a main window with a JButton. I have added to this button an event listener class (implementing the ActionListener interface) which, every time ...

4. Java: What's the difference between ActionEvent and ItemEvent on a JRadioButton? stackoverflow.com

They're both raised once after the mouse button is released and both can have all the information available on the JRadioButton right? Is there any difference?

5. How to associate pressing "enter" with clicking button? stackoverflow.com

In my swing program I have a JTextField and a JButton. I would like for, once the user presses the "enter" key, the actionListener of the JButton runs. How would I ...

6. Button cant find the Listener class stackoverflow.com

import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JPanel;

class Painter extends JPanel implements ActionListener{
private int x = 30, y = 30;
//remove the blocked comment to make it run
/*public Painter(){
    Buttons b ...

7. Walk-around to actionPerformed() returning void stackoverflow.com

I am trying to use the MVC design. In the model I wanted a method like this

public boolean changeSomeData(...){
    boolean b;
    //create a dialog with an ...

8. isShiftDown when JButton pressed? stackoverflow.com

Hi all
I have a JFrame and I've added a JButton to that JFrame.
Also I've added an ActionListener to my JButton.
Now please convert this Pseudocode to Java :

public void actionPreformed(ActionEvent ...

9. JButton breaks my Keylistener stackoverflow.com

JAVA USING NETBEANS Hello stackoverflow, i have a problem i would like help with. In a nutshell, I have a mouselistener and a keylistener on a jpanel, everything works fine except when ...

10. Jbutton listener isn't triggered, why? stackoverflow.com

I'm trying to get my basic GUI working and my navigation set up before attempting the coding for the functionality. Basically I have a login form that work and opens my ...

11. Where is the best place to register listeners to JButtons created from arrays? stackoverflow.com

I'm creating some JButtons from a String array for a menu. Those buttons are created in a class that extends JButton. On creation, the buttons call a method to create some ...

12. Using a Derived class of a Java Swing control to create listener for self stackoverflow.com

At the outset: I know that what I am doing is bad design. I am trying this to get a better feel of Java - what is possible, what is not ...

13. Getting the state of JToggleButton stackoverflow.com

Say I have a

JToggleButton but = new JToggleButton("OK") ;

Now I need the state of but when it is clicked. I mean I need to know if it's clicked or not. ...

14. keylistener not working after clicking button stackoverflow.com

I have a keylistener attached to my frame in java, i can detect key presses when I hit any key, a strange thing is happening however. My game is a ...

15. enabling push button with key listener coderanch.com

16. How to make a proper button listener? coderanch.com

Hello I've created some code to do the following: 1)It creates a frame and a panel. 2)A background image is added to the panel. 3)The panel is then added to the frame. 4)Then a image ( a jpg) moves from one point to another on the panel. It move in a continuous motion from one point to another. Ok the code ...

17. how to dynamically add and remove listeners to a button coderanch.com

18. JRadio Button : Event Listener coderanch.com

I'm a fan of another listener for this case: ItemListener. It is notified when what it is listening to is selected or deselected. This is true even if the change is programmatic -- done without a user clicking the mouse. To choose between ItemListener and ActionListener ask yourself what you really what to react to -- a change in selection or ...

19. KeyListener for a button? coderanch.com

I have a button that performs some action when its clicked, but I also want to have the same thing performed when the button is in focus and the user presses enter. I've looked into keybindings and keylisteners and I just can't get it to work so can someone give me an example of how to do this? If you get ...

20. Button Listener coderanch.com

I'm stumped on this one, no matter which button I press the getText() method always returns "Delete". I don't see where I'm repeating anything that would cause the same text for all three buttons. /** * Create the window frame */ class MenuFrame extends JFrame { private JPanel buttonPanel; public MenuFrame(String option) { Toolkit menuKit = Toolkit.getDefaultToolkit(); Image menuImage = menuKit.getImage("swreg.PNG"); ...

21. A better way to use JButton and Listener? coderanch.com

22. Adding a KeyListener to a JFrame with buttons. java-forums.org

Hey, I haven't been learning java very long so this may be really easy. We have a project and it involves inputting and encrypting a message. I don't want to add a keylistener to a JTextbox or anything similar as then the message I input is plainly viewable. I was hoping to be able to simply type when the frame is ...

23. Add KeyListener to a button/panel java-forums.org

24. Jbutton blocks Keylistener java-forums.org

na.. i learned to much of java in the last view weeks ... i dont want to get myself into sth new now.....^^ my solution now: MainFrame.setVisible(false); MainFrame.setVisible(true); it works cause i dont need button and keylistener at the smae time. so i just do this when the button is removed.. thanks anyway guys, ill get to the key bindings later ...

25. Question about adding ?listeners for JButtons forums.oracle.com

After looking at the API I wondered why adding listeners for buttons is located in the AbstractButton class? This results in possibility to add an ActionListener, ChangeListener and ItemListener for an ordinary JButton which only fires ActionEvents. I know there is a logical meaning behind this but I can't see it, would be very pleased if some one could enlighten me ...

26. Gui - moving buttons and their listeners to separate classes forums.oracle.com

i'm no swing expert. you might have better luck if you posted a link to this thread there. the main class that 'works' is probably a JFrame that performs the task you expect when an event is fired (e.g., update the frame, etc.) The inner listener that you have doesn't do anything other than addButton, so your assumptions need to be ...