Question

Okay so I am making a 2d array of JToggleButtons. I got the action listener up and going, but I have no way to tell which button is which.

If I click one, all it returns is something like

javax.swing.JToggleButton[,59,58,19×14,alignmentX=0.0,alignmentY=0.5,border=javax.swing.plaf.BorderUIResource$CompoundBorderUIResource@53343ed0,flags=296,maximumSize=,minimumSize=,preferredSize=,defaultIcon=,disabledIcon=,disabledSelectedIcon=,margin=javax.swing.plaf.InsetsUIResource[top=2,left=14,bottom=2,right=14],paintBorder=true,paintFocus=true,pressedIcon=,rolloverEnabled=false,rolloverIcon=,rolloverSelectedIcon=,selectedIcon=,text=]

Is there anyway to stick some sort of item or number in the button object to associate each button?
And then when the button is clicked I can retrieve that item or number that was given to it?

Here is my button generator code. (How could I make “int l” associate (and count) to each button made, when it is called, it will return that number, or something along those lines.

JToggleButton buttons[][] = new JToggleButton[row][col];
int l = 0;


        for (int i = 0; i < row; i++) {
            for (int j = 0; j < col; j++) {
                buttons[i][j] = new JToggleButton("");
                buttons[i][j].setSize(15,15);
                buttons[i][j].addActionListener(new e());
                panel.add(buttons[i][j]);
                l++;

            }
        }

ActionListner

public class e implements ActionListener {

    @Override
    public void actionPerformed(ActionEvent e) {
        Object source = e.getSource();
        System.out.println(source);
    }

}

variable “source” is what I use to get my data, so how can int l, be returned through “source” (as its unique value for the unique button clicked) as a button is clicked?

Thanks,
-Austin

Answer 1

very simple way is add ClientProperty to the JComponent, add to your definition into loop e.g.

buttons[i][j].putClientProperty("column", i);
buttons[i][j].putClientProperty("row", j);
buttons[i][j].addActionListener(new MyActionListener());

rename e to the MyActionListener and change its contents

public class MyActionListener implements ActionListener {

    @Override
    public void actionPerformed(ActionEvent e) {
        JToggleButton btn = (JToggleButton) e.getSource();
        System.out.println("clicked column " + btn.getClientProperty("column")
                + ", row " + btn.getClientProperty("row"));
}

EDIT:

for MinerCraft clone isn’t required to implements ony of Listeners, there is only about Icon, find out that in this code (don’t implement any of Listeners anf remove used ItemListener)

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class ButtonsIcon extends JFrame {

    private static final long serialVersionUID = 1L;
    private Icon errorIcon = UIManager.getIcon("OptionPane.errorIcon");
    private Icon infoIcon = UIManager.getIcon("OptionPane.informationIcon");
    private Icon warnIcon = UIManager.getIcon("OptionPane.warningIcon");

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {

            @Override
            public void run() {
                ButtonsIcon t = new ButtonsIcon();
            }
        });
    }

    public ButtonsIcon() {
        setLayout(new GridLayout(2, 2, 4, 4));

        JButton button = new JButton();
        button.setBorderPainted(false);
        button.setBorder(null);
        button.setFocusable(false);
        button.setMargin(new Insets(0, 0, 0, 0));
        button.setContentAreaFilled(false);
        button.setIcon((errorIcon));
        button.setRolloverIcon((infoIcon));
        button.setPressedIcon(warnIcon);
        button.setDisabledIcon(warnIcon);
        add(button);

        JButton button1 = new JButton();
        button1.setBorderPainted(false);
        button1.setBorder(null);
        button1.setFocusable(false);
        button1.setMargin(new Insets(0, 0, 0, 0));
        button1.setContentAreaFilled(false);
        button1.setIcon((errorIcon));
        button1.setRolloverIcon((infoIcon));
        button1.setPressedIcon(warnIcon);
        button1.setDisabledIcon(warnIcon);
        add(button1);
        button1.setEnabled(false);

        final JToggleButton toggleButton = new JToggleButton();
        toggleButton.setIcon((errorIcon));
        toggleButton.setRolloverIcon((infoIcon));
        toggleButton.setPressedIcon(warnIcon);
        toggleButton.setDisabledIcon(warnIcon);
        toggleButton.addItemListener(new ItemListener() {

            @Override
            public void itemStateChanged(ItemEvent e) {
                if (toggleButton.isSelected()) {
                } else {
                }
            }
        });
        add(toggleButton);

        final JToggleButton toggleButton1 = new JToggleButton();
        toggleButton1.setIcon((errorIcon));
        toggleButton1.setRolloverIcon((infoIcon));
        toggleButton1.setPressedIcon(warnIcon);
        toggleButton1.setDisabledIcon(warnIcon);
        toggleButton1.addItemListener(new ItemListener() {

            @Override
            public void itemStateChanged(ItemEvent e) {
                if (toggleButton1.isSelected()) {
                } else {
                }
            }
        });
        add(toggleButton1);
        toggleButton1.setEnabled(false);

        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        pack();
        setVisible(true);
    }
}