public JCheckBox()
JCheckBox aCheckBox = new JCheckBox();
public JCheckBox(Icon icon)
JCheckBox aCheckBox = new JCheckBox(new DiamondIcon(Color.RED, false));
aCheckBox.setSelectedIcon(new DiamondIcon(Color.PINK, true));
public JCheckBox(Icon icon, boolean selected)
JCheckBox aCheckBox = new JCheckBox(new DiamondIcon(Color.RED, false), true);
aCheckBox.setSelectedIcon(new DiamondIcon(Color.PINK, true));
public JCheckBox(String text)
JCheckBox aCheckBox = new JCheckBox("Spinach");
public JCheckBox(String text, boolean selected)
JCheckBox aCheckBox = new JCheckBox("Onions", true);
public JCheckBox(String text, Icon icon)
JCheckBox aCheckBox = new JCheckBox("Garlic", new DiamondIcon(Color.RED, false));
aCheckBox.setSelectedIcon(new DiamondIcon(Color.PINK, true));
public JCheckBox(String text, Icon icon, boolean selected)
JCheckBox aCheckBox = new JCheckBox("Anchovies", new DiamondIcon(Color.RED, false), true);
aCheckBox.setSelectedIcon(new DiamondIcon(Color.PINK, true));
public JCheckBox(Action action)
Action action = ...;
JCheckBox aCheckBox = new JCheckBox(action);
import java.awt.FlowLayout;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import javax.swing.ImageIcon;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
public class MainClass {
public static void main(String[] a) {
JFrame f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.add(new JCheckBoxDemo());
f.setSize(500, 500);
f.setVisible(true);
}
}
class JCheckBoxDemo extends JPanel implements ItemListener {
JTextField jtf;
public void init() {
try {
SwingUtilities.invokeAndWait(new Runnable() {
public void run() {
makeGUI();
}
});
} catch (Exception exc) {
System.out.println("Can't create because of " + exc);
}
}
private void makeGUI() {
setLayout(new FlowLayout());
ImageIcon normal = new ImageIcon("normal.gif");
ImageIcon rollover = new ImageIcon("rollover.gif");
ImageIcon selected = new ImageIcon("selected.gif");
JCheckBox cb = new JCheckBox("C", normal);
cb.setRolloverIcon(rollover);
cb.setSelectedIcon(selected);
cb.addItemListener(this);
add(cb);
cb = new JCheckBox("C++", normal);
cb.setRolloverIcon(rollover);
cb.setSelectedIcon(selected);
cb.addItemListener(this);
add(cb);
cb = new JCheckBox("Java", normal);
cb.setRolloverIcon(rollover);
cb.setSelectedIcon(selected);
cb.addItemListener(this);
add(cb);
cb = new JCheckBox("Perl", normal);
cb.setRolloverIcon(rollover);
cb.setSelectedIcon(selected);
cb.addItemListener(this);
add(cb);
jtf = new JTextField(15);
add(jtf);
}
public void itemStateChanged(ItemEvent ie) {
JCheckBox cb = (JCheckBox) ie.getItem();
int state = ie.getStateChange();
if (state == ItemEvent.SELECTED)
jtf.setText(cb.getText() + " selected");
else
jtf.setText(cb.getText() + " cleared");
}
}