Give it two buttons labeled Odd and Even. The user must guess whether the secret

Question

Give it two buttons labeled Odd and Even. The user must guess whether the secret number is odd or even by clicking one of these buttons. After a guess is made, the applet should display either Congratulations, your are correct! or Sorry, you are wrong. In either case, also display The secret number was: followed by the secret number. Use lables for these three messages.

The program will have a private instance variable secretNumber of type long that holds the secret number. You will need to set it in the init method using the following line of code:

secretNumbe=java.util.Calendar.getInstance().getTimeInMillis() % 100;

In the actionPerformed method, check which button was pressed and make the appropriate response label visible. After that, make the two buttons invisible (only one guess is allowed) and the label containing the secret number visible. (java please)

Explanation / Answer

Solution:

------------------------------------------------

package oddeven;

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

import javax.swing.JApplet;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;

/**
* Odd Even Applet:
* This applet generates a secret number which is either even or odd. User is requested to guess the number
* either by clicking on Odd or on Even button. Depending whether user's guess is right or wrong, appropriate message
* is displayed.  
*/
public class OddEvenApplet extends JApplet {

   /**
   * serial version id
   */
   private static final long serialVersionUID = 1L;
  
   private long secretNumber; //secret number
   private JButton oddButton=new JButton("Odd"); //odd button
   private JButton evenButton=new JButton("Even"); //even button
   private JLabel congratulationsLabel=new JLabel("Congratulations, your are correct!",JLabel.CENTER); //label showing congratulations message
   private JLabel sorryLabel=new JLabel("Sorry, you are wrong!",JLabel.CENTER); //label showing sorry message
   private JLabel secretNumberLabel=new JLabel("The secret number was:",JLabel.CENTER); //label showing secret number
  
   /* (non-Javadoc)
   * @see java.applet.Applet#init()
   */
   @Override
   public void init() {
      
       //initializing secret number
       secretNumber=java.util.Calendar.getInstance().getTimeInMillis() % 100;
      
       //sets default visibility of labels
       congratulationsLabel.setVisible(false);
       sorryLabel.setVisible(false);
       secretNumberLabel.setVisible(false);
      
       //adds functionality to odd button
       oddButton.addActionListener(new ActionListener() {
          
           @Override
           public void actionPerformed(ActionEvent arg0) {
              
               //after clicking both buttons are set to be invisible
               oddButton.setVisible(false);
               evenButton.setVisible(false);
              
               //checking if secret number is odd. If so, shows congratulation message, else sorry message.
               if(secretNumber%2!=0)
               {                  
                   congratulationsLabel.setVisible(true);
                   secretNumberLabel.setText("The secret number was:"+secretNumber);
                   secretNumberLabel.setHorizontalAlignment(JLabel.CENTER);
                   secretNumberLabel.setVisible(true);
               }
               else
               {
                   sorryLabel.setVisible(true);
                   secretNumberLabel.setText("The secret number was:"+secretNumber);
                   secretNumberLabel.setHorizontalAlignment(JLabel.CENTER);
                   secretNumberLabel.setVisible(true);
               }              
           }      
       });
      
       //adds functionality to even button
       evenButton.addActionListener(new ActionListener() {
          
           @Override
           public void actionPerformed(ActionEvent e) {
              
               //after clicking both buttons are set to be invisible
               oddButton.setVisible(false);
               evenButton.setVisible(false);
              
               //checking if secret number is even. If so, shows congratulation message, else sorry message.
               if(secretNumber%2==0)
               {                  
                   congratulationsLabel.setVisible(true);
                   secretNumberLabel.setText("The secret number was:"+secretNumber);
                   secretNumberLabel.setHorizontalAlignment(JLabel.CENTER);
                   secretNumberLabel.setVisible(true);
               }
               else
               {
                   sorryLabel.setVisible(true);
                   secretNumberLabel.setText("The secret number was:"+secretNumber);
                   secretNumberLabel.setHorizontalAlignment(JLabel.CENTER);
                   secretNumberLabel.setVisible(true);
               }              
           }
       });
      
       //creates panel, adds components to it, then adds panel to applet
       JPanel panel=new JPanel(new GridLayout(3,2));
       panel.add(oddButton);
       panel.add(evenButton);
       panel.add(congratulationsLabel);
       panel.add(sorryLabel);
       panel.add(secretNumberLabel);
       add(panel,BorderLayout.NORTH);
       setSize(400, 400);      
      }
}

------------------------------------------------

Related Questions

Navigate

• Browse (All)
• Browse G
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.