Question

MyMenuFrame.java,
MyMenuFrameTest.java,

a. The title of the frame is “MyNotepad”.
b. Create and add border layout.
c. Create a text area to display contents. Add the text area to the center of the border layout.
d. Create a menu bar.
e. Create a file menu. Set mnemonic for file menu. It is “F”. File menu includes three menu items.
f. Add a separator between each menu item in the file menu.
i. Open
   1. Add a short cut for the menu item. It is ctrl+O.
       a. Use this syntax:
       MenuItem.setAccelerator(KeyStroke.getKeyStr oke('O', CTRL_DOWN_MASK));
   2. When a user clicks it (an action event occurs) a file
   chooser is created, and an open dialog box is opened.
   The user selects a text file to open it and then clicks
   “Open” or the user can click on “Cancel”. Use try block
   with resources. (Hint: add catch block automatically, click add catch clause).
ii. Save
   1. Add a short cut for the menu item. It is ctrl+S.
   2. When a user clicks it (an action event occurs) a file
    chooser is created, and a save dialog box is opened. The
   user writes the name of text file to save it and then clicks
   “Save” or the user can click on “Cancel”. User try block with
   resources. (Hint: add catch block automatically, click add catch clause).
iii. Exit
   1. Add a short cut for the menu item. It is ctrl+X.
   2. When a user clicks it (an action event occurs), it terminates the application.

g. Create edit menu. Set mnemonic for file menu. It is “D”. Edit menu
    includes two menus: Color and Font.

h. Add a separator between each sub menu

i. Create color menu. Set mnemonic for Color menu. It is “C”.
   i. Create change color menu item. Add a short cut for the menu
   item. It is ctrl+C.

ii. When a user clicks change color, a color chooser is opened,
and the user selects a color. By default, red color is selected.
Then, the color of the text is changed.

j. Create font menu. Set mnemonic for Font menu. It is “F”.
   i. This menu includes three radio button menu items: Times New Roman,
   Arial, Serif. (Hint: you also need a button group).
   When a user selects one of these fonts (an action event occurs),
   the font of the text will change. Set font size as 20.   
  
   ii. This menu includes also two check box menu items: Bold,
   Italic. A User can select both, only bold one, italic one,
   or unselect any of them (an item event occurs). Based on
   the user selection, set the font. (Hint: if one of them is
   unselected, set the font as plain). Set font size as 20.
   iii. Add a separator between radio button menu items and check box menu items

k. Create Print menu. Set mnemonic for print menu. It is “P”.
   i. Printer menu includes one menu item: Send to Printer.
   Add a short cut for the menu item. It is ctrl+P.

ii. When a user clicks it (an action event occurs), display
an Option Dialog. Display the message in the figure. If
the user clicks “Ok”, display a message dialog box (set information icon).
Display the message in the figure. If the user clicks
cancel, make the current frame as visible.

l. Create a help menu. Set mnemonic for help menu. It is “H”.
m. Help menu includes two menu items: About, Visit Homepage. Add
a separator between these menu items.

i. Create a menu item which is about. Add a short cut for the menu item. It is ctrl+A.

1. When a user clicks it (an action event occurs), display
a show message dialog box. Display the message
shown in the figure. Display information icon.

ii. Create a menu item which is visit homepage. Add a short cut
for the menu item. It is ctrl+V.
   1. When a user clicks it (an action event occurs), the user
   will be navigated to http://www.microsoft.com.
   2. For the navigation, create a static method (copy it):

   public static void openWebpage (String urlString) {
   try {
Desktop.getDesktop().browse(new
URL(urlString).toURI());
   }
    catch (Exception e) {
e.printStackTrace();
    }
   }

Then in the action performed method, call this static method
and provide the url String.

n. When it is necessary, import the necessary classes and interfaces.
o. Set frame as 600*400.

Answer 1

import java.awt.*;
import java.awt.event.*;
import java.net.URL;
import java.io.*;
import javax.swing.*;

class MyMenuFrame extends JFrame implements ActionListener {
   JMenu menuEdit = new JMenu("Edit");
   JMenu menuPrint = new JMenu("Print");
   JMenu mnFile = new JMenu("File");
   JMenu menuHelp = new JMenu("Help");
   JRadioButton subMenuItem1 = new JRadioButton("Times New Roman");
   JRadioButton subMenuItem2 = new JRadioButton("Arial");
   JRadioButton subMenuItem3 = new JRadioButton("Serif");
   JCheckBox subMenuItem4 = new JCheckBox("Bold");
   JCheckBox subMenuItem5 = new JCheckBox("Italic");
   JScrollPane scrollPane;
   JTextArea notePadArea;
   public MyMenuFrame() {
       this.setLayout(new BorderLayout());
       JMenuBar menuBar = new JMenuBar();
       this.setJMenuBar(menuBar);
       mnFile.setMnemonic(KeyEvent.VK_F);
       menuBar.add(mnFile);
       JMenuItem mntmOpen = new JMenuItem("Open");
       mntmOpen.setMnemonic(KeyEvent.VK_O);
       mntmOpen.setActionCommand("open");
       mntmOpen.setAccelerator(KeyStroke.getKeyStroke('O', KeyEvent.CTRL_DOWN_MASK));
       mntmOpen.addActionListener(this);
       JMenuItem mntmSave = new JMenuItem("Save");
       mntmSave.setMnemonic(KeyEvent.VK_S);
       mntmSave.setActionCommand("save");
       mntmSave.setAccelerator(KeyStroke.getKeyStroke('S', KeyEvent.CTRL_DOWN_MASK));
       mntmSave.addActionListener(this);
       JMenuItem mntmExit = new JMenuItem("Exit");
       mntmExit.setMnemonic(KeyEvent.VK_X);
       mntmExit.setActionCommand("exit");
       mntmExit.setAccelerator(KeyStroke.getKeyStroke('X', KeyEvent.CTRL_DOWN_MASK));
       mntmExit.addActionListener(this);
       mnFile.add(mntmOpen);
       mnFile.addSeparator();
       mnFile.add(mntmSave);
       mnFile.addSeparator();
       mnFile.add(mntmExit);
       menuEdit.setMnemonic(KeyEvent.VK_E);
       menuBar.add(menuEdit);
       JMenu submenu1 = new JMenu("Color");
       submenu1.setMnemonic(KeyEvent.VK_C);
       JMenuItem menuItem0 = new JMenuItem("Change Color");
       menuItem0.setAccelerator(KeyStroke.getKeyStroke('C', KeyEvent.CTRL_DOWN_MASK));
       menuItem0.setActionCommand("color");
       menuItem0.addActionListener(this);
       submenu1.add(menuItem0);
       menuEdit.add(submenu1);
       menuEdit.addSeparator();
       ActionListener sm1 = new ActionListener() {
           public void actionPerformed(ActionEvent actionEvent) {
               subMenuItem1.setSelected(true);
               subMenuItem2.setSelected(false);
               subMenuItem3.setSelected(false);
               notePadArea.setFont(new Font("Times New Roman", Font.PLAIN, 20));
           }
       };
       ActionListener sm2 = new ActionListener() {
           public void actionPerformed(ActionEvent actionEvent) {
               subMenuItem2.setSelected(true);
               subMenuItem1.setSelected(false);
               subMenuItem3.setSelected(false);
               notePadArea.setFont(new Font("Arial", Font.PLAIN, 20));

           }
       };

       ActionListener sm3 = new ActionListener() {
           public void actionPerformed(ActionEvent actionEvent) {
               subMenuItem3.setSelected(true);
               subMenuItem2.setSelected(false);
               subMenuItem1.setSelected(false);
               notePadArea.setFont(new Font("Serif", Font.PLAIN, 20));

           }
       };

       JMenu submenu = new JMenu("Font"); //creating the new menu which comes under Edit
       submenu.setMnemonic(KeyEvent.VK_F); //creating shortcut menu when user press Alt+F
       subMenuItem1.setMnemonic(KeyEvent.VK_T); //creating shortcut menu when user press Alt+T for Times New Roman
       subMenuItem1.setActionCommand("times_new_roman"); //setting the command used to call the correcponding action when user click this
       subMenuItem1.addActionListener(sm1); //adding actionlistener
       submenu.add(subMenuItem1); //adding to the submenu

       subMenuItem2.setMnemonic(KeyEvent.VK_A); //creating shortcut key Alt+A
       subMenuItem2.setActionCommand("arial"); //respond when the command equals to arial
       subMenuItem2.addActionListener(sm2); //adding action listener
       submenu.add(subMenuItem2); //adding it to the submenu

       subMenuItem3.setMnemonic(KeyEvent.VK_S);
       subMenuItem3.setActionCommand("serif");
       subMenuItem3.addActionListener(sm3);
       submenu.add(subMenuItem3);

       submenu.addSeparator();

       subMenuItem4.setMnemonic(KeyEvent.VK_B);
       subMenuItem4.setActionCommand("bold");
       subMenuItem4.addActionListener(this);
       submenu.add(subMenuItem4);

       subMenuItem5.setMnemonic(KeyEvent.VK_I);
       subMenuItem5.setActionCommand("italic");
       subMenuItem5.addActionListener(this);
       submenu.add(subMenuItem5);

       menuEdit.add(submenu);

       // create Print menu

       menuPrint.setMnemonic(KeyEvent.VK_P);

       menuBar.add(menuPrint);

       JMenuItem menuItemPrint = new JMenuItem("Send To Printer");

       menuItemPrint.setAccelerator(KeyStroke.getKeyStroke('P', KeyEvent.CTRL_DOWN_MASK));

       menuItemPrint.setActionCommand("print");

       menuItemPrint.addActionListener(this);

       menuPrint.add(menuItemPrint);

       // create Help menu

       menuHelp.setMnemonic(KeyEvent.VK_H);

       menuBar.add(menuHelp);

       JMenuItem menuItemHelp = new JMenuItem("About");

       menuItemHelp.setAccelerator(KeyStroke.getKeyStroke('A', KeyEvent.CTRL_DOWN_MASK));

       menuItemHelp.setActionCommand("about");
       menuItemHelp.addActionListener(this);

       JMenuItem menuItemVisitHomePage = new JMenuItem("Visit Home Page");

       menuItemVisitHomePage.setAccelerator(KeyStroke.getKeyStroke('V', KeyEvent.CTRL_DOWN_MASK));

       menuItemVisitHomePage.setActionCommand("visithomepage");
       menuItemVisitHomePage.addActionListener(this);

       menuHelp.add(menuItemHelp);

       menuHelp.addSeparator();

       menuHelp.add(menuItemVisitHomePage);

       notePadArea = new JTextArea();

       // set no word wrap

       notePadArea.setWrapStyleWord(false);

       // create scrollable pane

       scrollPane = new JScrollPane(notePadArea, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);

       this.add(scrollPane, BorderLayout.CENTER);

   }

   @Override

   public void actionPerformed(ActionEvent e) {

       if (e.getActionCommand().equals("exit")) {

           System.exit(0);

       } else if (e.getActionCommand().equals("open")) {

           JFileChooser file = new JFileChooser();

           String fileName = ""; //initial filename was empty

           // show open file dialog

           if (file.showOpenDialog(this) == JFileChooser.APPROVE_OPTION) {

               fileName = file.getSelectedFile().getAbsolutePath();

           } else {

               return;

           }

           try (BufferedReader bufferedReader = new BufferedReader(new FileReader(fileName));) {

               // load file content into text area

               StringBuffer stringBuffer = new StringBuffer(); //creating a string buffer for reading data from file

               String lines = ""; //for reading the lines from the selecting file

               while ((lines = bufferedReader.readLine()) != null) { //it'll read untill the file ends

                   stringBuffer.append(lines).append("\n"); //for every line read insert new line in stringBuffer

               }

               bufferedReader.close(); //after reading of file done, the bufferedReader will be close

               notePadArea.setText(stringBuffer.toString()); //converting the read text to string and inserting this text into textArea

           } catch (Exception error1) { //if any exception occures

               System.out.println(error1.toString()); //convert the expection into string and print it

           }

       } else if (e.getActionCommand().equals("save")) { //if the user click the save command then the file will gonna saved

           JFileChooser file = new JFileChooser(); //creating the file chooser

           String fileName = ""; //initial file name is empty

           // show open file dialog

           if (file.showSaveDialog(this) == JFileChooser.APPROVE_OPTION) { //if the user select file and clicks OK button

               fileName = file.getSelectedFile().getAbsolutePath();

           } else { //other wise will be closed
               return;
           }

           try (BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(fileName));) {

               // write editor's content to selected file.

               bufferedWriter.write(notePadArea.getText()); //get the text entered in textarea
               bufferedWriter.flush(); //clear the writer
           } catch (Exception ex1) {}

       } else if (e.getActionCommand().equals("color")) {

           Color select_color = JColorChooser.showDialog(this, "Select a color", Color.RED);
           notePadArea.setForeground(select_color);

       } else if (e.getActionCommand().equals("times_new_roman")) {
           if (subMenuItem1.isSelected())
               notePadArea.setFont(new Font("Times New Roman", Font.PLAIN, 20));

       } else if (e.getActionCommand().equals("arial")) {
           if (subMenuItem2.isSelected())
               notePadArea.setFont(new Font("Arial", Font.PLAIN, 20));

       } else if (e.getActionCommand().equals("serif")) {
           if (subMenuItem3.isSelected())
               notePadArea.setFont(new Font("Serif", Font.PLAIN, 20));

       } else if (e.getActionCommand().equals("bold")) {
           if (subMenuItem4.isSelected()) {
               if (subMenuItem5.isSelected()) {
                   notePadArea.setFont(new Font("Serif", Font.BOLD + Font.ITALIC, 12));
               } else {
                   notePadArea.setFont(new Font("Serif", Font.BOLD, 12));
               }
           } else {
               if (!subMenuItem5.isSelected())
                   notePadArea.setFont(new Font("Serif", Font.PLAIN, 12));
           }

       } else if (e.getActionCommand().equals("italic")) {

           if (subMenuItem5.isSelected()) {
               if (subMenuItem4.isSelected()) {
                   notePadArea.setFont(new Font("Serif", Font.BOLD + Font.ITALIC, 12));
               } else {
                   notePadArea.setFont(new Font("Serif", Font.ITALIC, 12));
               }
           } else {
               if (!subMenuItem4.isSelected())
                   notePadArea.setFont(new Font("Serif", Font.PLAIN, 12));
           }

       } else if (e.getActionCommand().equals("print")) {

           int output = JOptionPane.showConfirmDialog(this, "Do you want to print the File", "Confirmation", JOptionPane.YES_NO_OPTION);
           if (output == 0) {
               JOptionPane.showMessageDialog(this, "The file is successfully printed", "Confirmation", JOptionPane.INFORMATION_MESSAGE);
           }
       } else if (e.getActionCommand().equals("changecolor")) {
           System.out.println("Color clicked");
       } else if (e.getActionCommand().equals("about")) {
           JOptionPane.showMessageDialog(this, "This software is developed in 2019\nVersion is 1.0", "About", JOptionPane.INFORMATION_MESSAGE);
       } else if (e.getActionCommand().equals("visithomepage")) {
           openWebpage("http://www.microsoft.com");
       }
   }
   private void openWebpage(String urlString) {
       try {
           Desktop.getDesktop().browse(new URL(urlString).toURI());
       } catch (Exception e) {
           e.printStackTrace();
       }
   }
}

class MyMenuFrameTest {
   public static void main(String[] args) {
       MyMenuFrame frame = new MyMenuFrame();
       frame.setTitle("MyNotepad");
       //for the title of the box
       frame.setSize(600, 400);
       //for the size of the box
       frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

       frame.setVisible(true);
   }
}