Main.java Source code

Introduction

Here is the source code for Main.java

Source

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();
    }
}