Question

Create a java Swing GUI application that presents the user with a “fortune”.

1. Create a java Swing GUI application in a new Netbeans project called FortuneTeller. Your project will have a FortuneTellerFrame.java class (which inherits from JFrame) and a java main class: FortuneTellerViewer.java. Your application should have and use the following components:
   1. Top panel:
      
      A JLabel with text “Fortune Teller” (or something similar!) and an ImageIcon. Find an appropriate non-commercial Fortune Teller image for your ImageIcon. (The JLabel has a constructor that takes a String and the ImageIcon. Figure out from the Swing API or the content in Canvas how to display the text either above or below the ImageIcon.) Select a font face that works with your image and set the size to a larger value (try 36 and 48). Note that you have to add the image file to your Netbeans project directory.
   2. Middle panel:
      
      A JTextArea within a JScrollPane where the fortunes will be displayed one per line. Again, set the font values so that it works. (Should be smaller than the large text of the Top panel.)
   3. Bottom panel:
      
      A button with the label “Read My Fortune!”.

A button with the label “Quit”

2. Create separate fonts for the title, buttons and the fortune display.
3. I recommend that you model your program on the Big Java examples that we have been following in our Lab practices. The FortuneTellerFrame class inherits from JFrame. The minimal code in the java main class viewer just creates an instance of FortuneTellerFrame and sets the Frame stats.
4. Create a String array(List) of at least 12 humorous fortunes. When the user clicks on the “Read My Fortune” button your program should randomly select a fortune from your array and append it to the display in the ScrollPanel TextArea. Make sure that you implement the constraint that the program will never return the same fortune as the last one presented. To be clear, the program will repeat fortunes just not the same one twice in a row. (Hint: remember the index of the current fortune and when you generate a new random index, make sure that it is different from the previous one.)
   
   Note that the textArea will display all the fortunes that the user receives one after another and then will be scrollable.
5. Use a reasonable visually pleasing arrangement of your components using BorderLayout. Following the example that I have posted in Canvas, get an instance of the Toolkit and set your main JFrame to be ¾ of the width of the display and centered on the screen. (The example is in the Canvas Course Documents folder that contains the Java GUI materials.)
6. Make sure that you use the new Java 8 Lambda Expressions for the actionlistener code for the buttons.
7. Test your program thoroughly. Get a screen capture shot that shows at least 5 fortunes in the scrollpane/textarea. Paste the shot here:
   
   

Answer 1

Working code implemented in Java and appropriate comments provided for better understanding.

Here I am attaching code for all files:

FortuneTellerFrame.java:

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Image;
import java.awt.TextArea;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.SwingConstants;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import java.util.Random;
import javax.swing.JScrollBar;
import javax.swing.JTextArea;
import static javax.swing.ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS;

public class FortuneTellerFrame extends JFrame
{
JPanel top, middle, bottom, main;
JLabel topLbl, bottomLbl;
JButton actionBtn, quitBtn;
JTextArea textArea;
JScrollPane scroller;
JScrollBar verticle;
ImageIcon icon;
ArrayList<String> fortunes = new ArrayList<>();
ArrayList<Integer> repeatChecker = new ArrayList<>();

public int index;
  
public FortuneTellerFrame()
{
super("Fortune Teller");
main = new JPanel();
createTopPanel();
createMiddlePanel();
createBottomPanel();
loadFortunes();
  
// Now add sub panels to main
main.setLayout(new BorderLayout());
main.add(top,BorderLayout.NORTH);
main.add(middle,BorderLayout.CENTER);
main.add(bottom,BorderLayout.SOUTH);
  
Toolkit kit = Toolkit.getDefaultToolkit();
Dimension screenSize = kit.getScreenSize();
  
int screenHeight = screenSize.height;
int screenWidth = screenSize.width;
  
setSize(3 * (screenSize.width / 4), 3 * (screenSize.height / 4));
setLocationRelativeTo(null);
  
  
add(main);
  
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
  
private void loadFortunes()
{
fortunes.add("Silence is golden, ducktape is silver.");
fortunes.add("Friends help you move a couch, best friends help you move a body.");
fortunes.add("You will meet the significant other or your dreams...Never!");
fortunes.add("Tomorrrow you will wake up....what? Did you want something else? You asked for a fortune, not a meaningful one.");
fortunes.add("You will see the light, just not the one you are expecting.");
fortunes.add("Meh....try again later.");
fortunes.add("Hearty laughter is a good way to jog internally without having to go outdoors.");
fortunes.add("The fortune you seek is not here.");
fortunes.add("A palm can say much, especially when it smacks.");
fortunes.add("Today might be a huge improvement over yesterday.");
fortunes.add("Never tease an armed midget witha high five.");
fortunes.add("You will__________ insert quarter for rest of fortune.");
}
  
private void createTopPanel()   
{
top = new JPanel();
icon = new ImageIcon("fortuneTeller.png");
topLbl = new JLabel("Fortune Teller", icon, SwingConstants.CENTER);
topLbl.setFont(new Font("Comic Sans MS",Font.PLAIN, 36));
top.add(topLbl);
}
  
private void createMiddlePanel()
{
middle = new JPanel();
textArea = new JTextArea(10, 50);
scroller = new JScrollPane(textArea);

scroller.setVerticalScrollBarPolicy(VERTICAL_SCROLLBAR_ALWAYS);
scroller.setPreferredSize(new Dimension(700, 400));
// scroller.setAlignmentX(CENTER_ALIGNMENT);
// verticle = scroller.getVerticalScrollBar();
// verticle.setValue(verticle.getMaximum());

middle.setFont(new Font("Bradley Hand ITC", Font.ITALIC, 20));

middle.add(scroller);
}
  
private void createBottomPanel()
{
bottom = new JPanel();
bottomLbl = new JLabel();
  
actionBtn = new JButton("Read My Fortune!");
actionBtn.addActionListener((ActionEvent ae) -> {
mixFortunes();
});
  
quitBtn = new JButton("Quit");
quitBtn.addActionListener((ActionEvent ae) -> {
System.exit(0);
});
  
bottom.setFont(new Font("Bradley Hand ITC", Font.ITALIC, 12));
bottom.add(actionBtn);
bottom.add(quitBtn);
}

public void mixFortunes() throws ArrayIndexOutOfBoundsException
{
Random random = new Random();
int previousNum;
  
if(repeatChecker.size() > 1)
{
previousNum = repeatChecker.size() -1;
}
else
{
previousNum = 0;
}
  
while (true)
{
index = random.nextInt(fortunes.size());
repeatChecker.add(index);
if (index != repeatChecker.get(previousNum)) break;
}
  
textArea.append(fortunes.get(index) + "\n");
// verticle.setValue(verticle.getMaximum());
}
}

FortuneTellerViewer.java:

import javax.swing.JFrame;

public class FortuneTellerViewer {

/**
* @param args the command line arguments
*/
public static void main(String[] args)
{
JFrame frame = new FortuneTellerFrame();
frame.setVisible(true);
}
  
}

Sample Output Screenshots: