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import java.awt.FlowLayout;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
public class Main implements ItemListener {
JCheckBox jcbControl = new JCheckBox("Translate");
JCheckBox jcbOption1 = new JCheckBox("A");
JCheckBox jcbOption2 = new JCheckBox("B");
JCheckBox jcbOption3 = new JCheckBox("C");
Main() {
JFrame jfrm = new JFrame("Check Box Demo");
jfrm.setLayout(new FlowLayout());
jfrm.setSize(300, 200);
jfrm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jcbOption1.setEnabled(false);
jcbOption2.setEnabled(false);
jcbOption3.setEnabled(false);
jcbControl.addItemListener(new ItemListener() {
public void itemStateChanged(ItemEvent ie) {
if (jcbControl.isSelected()) {
jcbOption1.setEnabled(true);
jcbOption2.setEnabled(true);
jcbOption3.setEnabled(true);
System.out.println("enabled.");
} else {
jcbOption1.setEnabled(false);
jcbOption2.setEnabled(false);
jcbOption3.setEnabled(false);
System.out.println("disabled.");
}
}
});
jcbOption1.addItemListener(this);
jcbOption2.addItemListener(this);
jcbOption3.addItemListener(this);
jfrm.add(jcbControl);
jfrm.add(jcbOption1);
jfrm.add(jcbOption2);
jfrm.add(jcbOption3);
jfrm.setVisible(true);
}
public void itemStateChanged(ItemEvent ie) {
JCheckBox cb = (JCheckBox) ie.getItem();
if (ie.getStateChange() == ItemEvent.SELECTED)
System.out.println(cb.getText() + " selected.");
else
System.out.println(cb.getText() + " cleared.");
if (jcbOption1.isSelected())
System.out.println("1");
else if (jcbOption2.isSelected())
System.out.println("2");
else if (jcbOption3.isSelected())
System.out.println("3");
else
System.out.println("None");
}
public static void main(String args[]) {
new Main();
}
}
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