JToggleButton is a button that has two states. Pressed and not pressed. : JToggleButton « Swing « Java Tutorial

1. Java Tutorial
2. Swing
3. JToggleButton

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

import javax.swing.JDialog;
import javax.swing.JPanel;
import javax.swing.JToggleButton;

public class ToggleButton extends JDialog implements ActionListener {

  private JToggleButton red = new JToggleButton("red");

  private JToggleButton green = new JToggleButton("green");

  private JToggleButton blue = new JToggleButton("blue");

  private JPanel display = new JPanel();

  public ToggleButton() {
    JPanel bottom = new JPanel();
    JPanel leftPanel = new JPanel();

    red.addActionListener(this);
    green.addActionListener(this);
    blue.addActionListener(this);

    leftPanel.add(red);
    leftPanel.add(green);
    leftPanel.add(blue);
    bottom.add(leftPanel);

    display.setBackground(Color.black);

    bottom.add(display);
    add(bottom);

    pack();
    setResizable(false);
    setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
    setVisible(true);
  }

  public static void main(String[] args) {
    new ToggleButton();
  }

  public void actionPerformed(ActionEvent e) {
    Color color = display.getBackground();
    int red = color.getRed();
    int green = color.getGreen();
    int blue = color.getBlue();

    if (e.getActionCommand() == "red") {
      if (red == 0) {
        red = 255;
      } else {
        red = 0;
      }
    }

    if (e.getActionCommand() == "green") {
      if (green == 0) {
        green = 255;
      } else {
        green = 0;
      }
    }

    if (e.getActionCommand() == "blue") {
      if (blue == 0) {
        blue = 255;
      } else {
        blue = 0;
      }
    }

    Color setCol = new Color(red, green, blue);
    display.setBackground(setCol);
  }
}

14.8.JToggleButton
	14.8.1.	Creating JToggleButton Components
	14.8.2.	JToggleButton is a button that has two states. Pressed and not pressed.
	14.8.3.	Listening to JToggleButton Events with an ActionListener
	14.8.4.	Listening to JToggleButton Events with an ItemListener
	14.8.5.	Listening to JToggleButton Events with a ChangeListener
	14.8.6.	The event sequence for JToggleButton: ActionListener, ItemListener and ChangeListener
	14.8.7.	Customizing JToggleButton Look and Feel
	14.8.8.	This class represents the toggle buttons used in toolbars.