JButton ActionListeners

Hey I am trying to add Action Listeners to various buttons in my program but I am stuck at the moment. The code below is a snippet from the program.

Code:

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JPanel tableButtonPanel = new JPanel();
        tableButtonPanel.add(new JButton("Add thing"));
        tableButtonPanel.add(new JButton("Delete thing"));
        tableButtonPanel.add(new JButton("Modify thing"));

---

Is there a way to create action listeners to the buttons when they are created this way?
Any help appreciated, Thanks :)

Hmm. I'm sure you could get to the buttons somehow through getting all the components of the JPanel, but it'd be far easier to just go "JButton b1=new JButton(); b1.addActionListener()".

The way you're doing it now, you create a new JButton and pass it directly into the JPanel.add() method.

You need to keep around a reference to each JButton, at least long enough to add an ActionListener to it. Something like:

Code:

---

JPanel tableButtonPanel = new JPanel();
JButton addButton = new JButton("Add thing");
addButton.addActionListener(listener);
tableButtonPanel.add(addButton);
//same for delete
//same for modify

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All Swing's JComponents are Containers; you can get all Components from a Container; a bit of casting on the Components should do the trick but I find it an ugly hack ...

kind regards,

Jos

Okay someone is going to kick my butt for this. But in the interest of exploring boundaries and possibilities:

Code:

---

public class MyButton extends JButton {

  public MyButton(String label, ActionListener listener){
    super(label);
    addActionListener(listener);
  }
}

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When the standard API doesn't provide a direct way, you can always bodge something together yourself.

Quote:

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Originally Posted by gimbal2

When the standard API doesn't provide a direct way ...

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Code:

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tableButtonPanel.add(new JButton("Add thing") {
  {
    addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        // respond to button click
      }
    });
  }
});

---

:8):

Hey thanks everyone for your suggestions they are a great help :) finally i can move on from this task :D

A note: the last two responses are in the way of a joke. While valid code, this is not the way to write a maintainable application.

Kevin's response at #3 is the way to go.

db