Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.Component;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;

public class Main {
    public static void main(String[] args) {
        JFrame frame = new JFrame();

        JPanel entreePanel = new JPanel();
        final ButtonGroup entreeGroup = new ButtonGroup();
        JRadioButton radioButton;
        entreePanel.add(radioButton = new JRadioButton("A"));
        radioButton.setActionCommand("A");
        entreeGroup.add(radioButton);
        entreePanel.add(radioButton = new JRadioButton("B"));
        radioButton.setActionCommand("B");
        entreeGroup.add(radioButton);
        entreePanel.add(radioButton = new JRadioButton("C", true));
        radioButton.setActionCommand("C");
        entreeGroup.add(radioButton);

        final JPanel condimentsPanel = new JPanel();
        condimentsPanel.add(new JCheckBox("Ketchup"));
        condimentsPanel.add(new JCheckBox("Mustard"));
        condimentsPanel.add(new JCheckBox("Pickles"));

        JPanel orderPanel = new JPanel();
        JButton orderButton = new JButton("Place Order");
        orderPanel.add(orderButton);

        frame.setLayout(new GridLayout(3, 1));
        frame.add(entreePanel);
        frame.add(condimentsPanel);
        frame.add(orderPanel);

        orderButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent ae) {
                String entree = entreeGroup.getSelection().getActionCommand();
                System.out.println(entree + " sandwich");
                Component[] components = condimentsPanel.getComponents();
                for (Component c : components) {
                    JCheckBox cb = (JCheckBox) c;
                    if (cb.isSelected())
                        System.out.println("With " + cb.getText());
                }
            }
        });

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(300, 150);
        frame.setVisible(true);
    }
}