Question

Lab - 0 X Enter a word HELLO Enter HELLO Courier O Red Arial Green Blue Multiple check boxes can be checked at the same time, but for this exercise we set our check boxes' behavior so that only one may be checked at a time. We do the same for the radio buttons. Download the template and modify it. ButtonGroup checkBoxes ... radioButtons . You are required to add 7 statements into the answer box below . The first Button Group should be called checkBoxes and the second Button Group should be called radioButtons • Hint: The order of your statements is very important. Use the same order given by the screenshot above. i.e. Courier -> Аrial -> Red -> Green -> Blue) • Add a single space between each statement, do not put extra space between them. • Remove leading and trailing spaces . Keep a copy of your solution to this task because you will be extending it step by step in subsequent tasks

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.BorderFactory;
import javax.swing.border.Border;
public class Q1 extends JFrame {

   public static void createAndShowGUI() {
       JFrame frame = new JFrame("Q1");
       frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
       Font courierFont = new Font("Courier", Font.BOLD, 40);
       Font arialFont = new Font("Arial", Font.BOLD, 40);
       Font sansFont = new Font("Sans-serif", Font.BOLD, 20);
       JLabel label = new JLabel("Enter a word"); label.setFont(sansFont);
       Font font1 = new Font("Sans-serif", Font.BOLD, 40);
       JLabel label1 = new JLabel("HELLO"); label1.setFont(font1);
       JTextField textField = new JTextField(10); textField.setText("HELLO"); textField.setFont(sansFont);
       JButton button = new JButton("Enter"); button.setFont(sansFont);
       JCheckBox checkboxCourier = new JCheckBox("Courier"); checkboxCourier.setFont(courierFont);
       JCheckBox checkboxArial = new JCheckBox("Arial"); checkboxArial.setFont(arialFont);
       Font font2 = new Font("Sans-serif", Font.ITALIC, 15);
       JRadioButton radioButtonRed = new JRadioButton("Red"); radioButtonRed.setFont(font2);
       JRadioButton radioButtonGreen = new JRadioButton("Green"); radioButtonGreen.setFont(font2);
       JRadioButton radioButtonBlue = new JRadioButton("Blue"); radioButtonBlue.setFont(font2);

       JPanel topPanel = new JPanel();
       topPanel.add(label);
       topPanel.add(textField);
       topPanel.add(button);
       topPanel.add(label1);
       JPanel checkBoxPanel = new JPanel(); checkBoxPanel.setLayout(new GridBagLayout());
       GridBagConstraints c1 = new GridBagConstraints(); c1.gridx = 0; c1.gridy = GridBagConstraints.RELATIVE; c1.anchor = GridBagConstraints.WEST;
       checkBoxPanel.add(checkboxCourier, c1);
       checkBoxPanel.add(checkboxArial, c1);

       JPanel bottomPanel = new JPanel();
       JPanel radioButtonPanel = new JPanel(); radioButtonPanel.setLayout(new GridBagLayout());
       GridBagConstraints c = new GridBagConstraints(); c.gridx = 0; c.gridy = GridBagConstraints.RELATIVE; c.anchor = GridBagConstraints.WEST;
       radioButtonPanel.add(radioButtonRed, c);
       radioButtonPanel.add(radioButtonGreen, c);
       radioButtonPanel.add(radioButtonBlue, c);
       bottomPanel.add(checkBoxPanel);
       bottomPanel.add(radioButtonPanel);

       //ButtonGroup needs to be completed

       JPanel middlePanel = new JPanel();
       middlePanel.add(label1);

  frame.setLayout(new FlowLayout());
       frame.getContentPane().add(topPanel);
       frame.getContentPane().add(middlePanel);
       frame.getContentPane().add(bottomPanel);

       frame.setSize(420, 300);
       frame.setVisible(true);
       button.addActionListener(new ActionListener() {
           public void actionPerformed(ActionEvent event) {
               String word = textField.getText(); label1.setText(word);
           }
       });
       textField.addActionListener(new ActionListener() {
           public void actionPerformed(ActionEvent event) {
               String word = textField.getText(); label1.setText(word);
           }
       });
       radioButtonGreen.addActionListener(new ActionListener() {
           public void actionPerformed(ActionEvent event) {

           }
       });
       radioButtonBlue.addActionListener(new ActionListener() {
           public void actionPerformed(ActionEvent event) {

           }
       });
  checkboxArial.addActionListener(new ActionListener() {
           public void actionPerformed(ActionEvent event) {

           }
       });
   }

   public static void main(String[] args) {
    javax.swing.SwingUtilities.
invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
   }
}

Answer 1

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.BorderFactory;
import javax.swing.border.Border;
public class Q1 extends JFrame implements ItemListener,ActionListener{

   public static void createAndShowGUI() {
       JFrame frame = new JFrame("Q1");
       frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
       Font courierFont = new Font("Courier", Font.BOLD, 40);
       Font arialFont = new Font("Arial", Font.BOLD, 40);
       Font sansFont = new Font("Sans-serif", Font.BOLD, 20);
       JLabel label = new JLabel("Enter a word"); label.setFont(sansFont);
       Font font1 = new Font("Sans-serif", Font.BOLD, 40);
       JLabel label1 = new JLabel("HELLO"); label1.setFont(font1);
       JTextField textField = new JTextField(10); textField.setText("HELLO"); textField.setFont(sansFont);
       JButton button = new JButton("Enter"); button.setFont(sansFont);
     
       JCheckBox checkboxCourier = new JCheckBox("Courier"); checkboxCourier.setFont(courierFont);
       JCheckBox checkboxArial = new JCheckBox("Arial"); checkboxArial.setFont(arialFont);
     
       Font font2 = new Font("Sans-serif", Font.ITALIC, 15);
     
       JRadioButton radioButtonRed = new JRadioButton("Red"); radioButtonRed.setFont(font2);
       JRadioButton radioButtonGreen = new JRadioButton("Green"); radioButtonGreen.setFont(font2);
       JRadioButton radioButtonBlue = new JRadioButton("Blue"); radioButtonBlue.setFont(font2);

   //Button group added

       ButtonGroup bg=new ButtonGroup();  
       bg.add(radioButtonRed);bg.add(radioButtonGreen););bg.add(radioButtonBlue);
      
       JPanel topPanel = new JPanel();
       topPanel.add(label);
       topPanel.add(textField);
       topPanel.add(button);
       topPanel.add(label1);
       JPanel checkBoxPanel = new JPanel(); checkBoxPanel.setLayout(new GridBagLayout());
       GridBagConstraints c1 = new GridBagConstraints(); c1.gridx = 0; c1.gridy = GridBagConstraints.RELATIVE; c1.anchor = GridBagConstraints.WEST;
       checkBoxPanel.add(checkboxCourier, c1);
       checkBoxPanel.add(checkboxArial, c1);

       JPanel bottomPanel = new JPanel();
       JPanel radioButtonPanel = new JPanel(); radioButtonPanel.setLayout(new GridBagLayout());
       GridBagConstraints c = new GridBagConstraints(); c.gridx = 0; c.gridy = GridBagConstraints.RELATIVE; c.anchor = GridBagConstraints.WEST;
       radioButtonPanel.add(radioButtonRed, c);
       radioButtonPanel.add(radioButtonGreen, c);
       radioButtonPanel.add(radioButtonBlue, c);
       bottomPanel.add(checkBoxPanel);
       bottomPanel.add(radioButtonPanel);

       //ButtonGroup needs to be completed

       JPanel middlePanel = new JPanel();
       middlePanel.add(label1);

frame.setLayout(new FlowLayout());
       frame.getContentPane().add(topPanel);
       frame.getContentPane().add(middlePanel);
       frame.getContentPane().add(bottomPanel);

       frame.setSize(420, 300);
       frame.setVisible(true);
       checkboxCourier.addItemListener(this);
        checkboxArial.addItemListener(this);
      
       button.addActionListener(new ActionListener() {
           public void actionPerformed(ActionEvent event) {
               String word = textField.getText(); label1.setText(word);
           }
       });
       textField.addActionListener(new ActionListener() {
           public void actionPerformed(ActionEvent event) {
               String word = textField.getText(); label1.setText(word);
           }
       });
       radioButtonGreen.addActionListener(new ActionListener() {
           public void actionPerformed(ActionEvent event) {

           }

       });
       radioButtonBlue.addActionListener(new ActionListener() {
           public void actionPerformed(ActionEvent event) {

           }
       });
checkboxArial.addActionListener(new ActionListener() {
           public void actionPerformed(ActionEvent event) {

           }
       });
   }
   //for checkbox group
    public void itemStateChanged(ItemEvent eve)
    {
        if(checkboxCourier.isSelected())
        {
          
            checkboxCourier.setSelected(false);
        }
        else if(checkboxArial.isSelected())
        {
         
            checkboxArial.setSelected(false);
        }
     
    }

   public static void main(String[] args) {
    javax.swing.SwingUtilities.
invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
   }
}