Question

Basic button tracking

Deliverables

Updated files for

app6.java

myJFrame6.java

myJPanel6.java

student.java

Contents

You can start with the files available here.

public class app6
{
public static void main(String args[])
{
    myJFrame6 mjf = new myJFrame6();
}
}

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;

public class myJFrame6 extends JFrame
{
   myJPanel6 p6;
   public myJFrame6 ()
   {
       super ("My First Frame");
//------------------------------------------------------
// Create components: Jpanel, JLabel and JTextField
       p6 = new myJPanel6();
//------------------------------------------------------
// Choose a Layout for JFrame and
// add Jpanel to JFrame according to layout      
       getContentPane().setLayout(new BorderLayout());
       getContentPane().add(p6, "Center");
//------------------------------------------------------
       setDefaultCloseOperation(EXIT_ON_CLOSE);
       setSize (550, 400);
       setVisible(true);
   }
//-------------------------------------------------------------------
}

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;

public class myJPanel6 extends JPanel
{
   JButton b1,b2;
   public myJPanel6()
   {
       setLayout(new GridLayout(1,1));
//=====================================
       student st1 = new student("DaeSean", "Hamilton", 20);
//=====================================
       b1 = new JButton(st1.getName());
       add(b1);
//=====================================
       b2 = new JButton(st1.WhatIsUp());
       add(b2);
   }

}

class student
{
   //---------Declaring attributes----
   String firstName;
   String lastName;
   int age;
   String status;
   //------------------------------
  
  
   //----------Constrcutor------------
   public student(String a, String b, int c)
   {
       firstName = a;
       lastName = b;
       age = c;
       if(age<=25) status = "Traditional";
       else status = "Non-Traditional";
   }
  
   //---------------------------------
  
  
  
  
   //---------- METHODS --------
  
  
   String getName()
   {
       return("NAME = "+firstName+ " "+lastName + ", Age = "+age+", Status = "+status);
   }
  
   int getAge()
   {
       return age;
   }

   String getStatus()
   {
       return status;
   }
  
   String WhatIsUp()
   {
       String b = "dunno";
       double r = Math.random();
       int myNumber = (int)(r*3f);
       if (myNumber == 0) b = "reading";
       if (myNumber == 1) b = "talking";
       if (myNumber == 2) b = "interacting";
       return b;
   }
   //--------------------------------------------
}
  
  
   

An example of how to add images to buttons is available here.

public class app
{
public static void main(String args[])
{
    myJFrame mjf = new myJFrame();
}
}

import java.awt.*;
import javax.swing.*;

public class myJFrame extends JFrame
{
   myJPanelstd mjp;
   public myJFrame ()
   {
       super ("My First Frame");
//------------------------------------------------------
// Create components
       mjp = new myJPanelstd();
//------------------------------------------------------
// Choose a Layout for JFrame and
// add Jpanel to JFrame according to layout      
       getContentPane().setLayout(new BorderLayout());
       getContentPane().add(mjp,"Center");
//------------------------------------------------------
       setDefaultCloseOperation(EXIT_ON_CLOSE);
       setSize (800, 700);
       setVisible(true);
   }
}

import java.awt.*;
import javax.swing.*;
public class myJPanelstd extends JPanel
{
   public myJPanelstd()
   {
       setBackground(Color.pink);
                setLayout(new GridLayout(3,1));
        JButton jb1, jb2, jb3,jb4;
            ImageIcon imageFred = new ImageIcon("images/fred.jpg");
        jb1 = new JButton(imageFred); //JButton with image only
            jb1.setText("Fred");// adds a text to an existing button

            jb2 = new JButton("is a fan of .....");

            ImageIcon imageRon = new ImageIcon("images/r10.jpg");//creates the image to be used in a JButton
        jb3 = new JButton("Ronaldinho");
        jb3.setIcon(imageRon); // adds an image to an existing button
//-------------------------------------------------------      
// add buttons to JPanel      
//-------------------------------------------------------      
       add(jb1);
       add(jb2);
       add(jb3);
   }
}

Create a solution that tracks the use of the button #1 (student’s name)

Every time a user clicks on the first button (the button with the student’s name), you will show a different what’sUp in the second button.

Do it in 2 parts

Just show the what'sUp as a text

My First Frame NAME = Michael Robinson, Age-20, St other

Then show it graphically with a different picture for each what'sUp() result.

Answer 1

Hello, I have a solution for you. Implemented everything as per the requirements.

1. Modified the class myJPanel6 to add a button click listener for button b1, and in each button click, button b2’s text has been changed to set random whatisup message (part1)
2. Modified the same class to define 3 ImageIcon objects, which create icons for reading, interacting and talking activities (images are provided below, paste those in same directory). Defined a method for setting the background of the button b2 with a given whatisup message. Called that method along setting whatisup message on button b2. (part2)
3. No other classes have been modified, so I’m not attaching those classes.
4. Comments are included wherever code has been modified, If you have any doubts, feel free to ask, Thanks

myJPanel.java (part1)

import java.awt.*;

import javax.swing.*;

import java.awt.event.*;

public class myJPanel6 extends JPanel {

      JButton b1, b2;

      public myJPanel6() {

           

            setLayout(new GridLayout(1, 1));

            // =====================================

            final student st1 = new student("DaeSean", "Hamilton", 20);

            // =====================================

            b1 = new JButton(st1.getName());

            /**

            * Setting background color of first button to red

            */

            b1.setBackground(Color.RED);

            add(b1);

           

            /**

            * Defining a button with a random whatisup message

            */

            b2=new JButton(st1.WhatIsUp());

            /**

            * Setting background color to RED

            */

            b2.setBackground(Color.RED);

           

            add(b2);

            /**

            * Adding action listener for b1

            */

            b1.addActionListener(new ActionListener() {

                  public void actionPerformed(ActionEvent arg0) {

                        /**

                        * Setting a random whatisup message in button b2 everytime

                        * button b1 is clicked (Answer for first part)

                        */

                       

                        b2.setText(st1.WhatIsUp());

                       

                  }

            });

      }

     

}

myJPanel.java (part2)

import java.awt.*;

import javax.swing.*;

import java.awt.event.*;

public class myJPanel6 extends JPanel {

      JButton b1, b2;

      String whatisUp;

      ImageIcon readingIcon, interactingIcon, talkingIcon;

      public myJPanel6() {

            /**

            * Defining icons for each what is up messages

            */

            readingIcon = new ImageIcon("reading.jpg");

            interactingIcon = new ImageIcon("interacting.jpg");

            talkingIcon = new ImageIcon("talking.jpg");

            setLayout(new GridLayout(1, 1));

            // =====================================

            final student st1 = new student("DaeSean", "Hamilton", 20);

            // =====================================

            b1 = new JButton(st1.getName());

            /**

            * Setting background color of first button to red

            */

            b1.setBackground(Color.RED);

            add(b1);

            /**

            * getting a random whatisup message

            */

            whatisUp = st1.WhatIsUp();

            /**

            * Defining a button with the received whatisup message

            */

            b2=new JButton(whatisUp);

            /**

            * Setting background color to RED

            */

            b2.setBackground(Color.RED);

            /**

            * calling method to update the icon of the button, with the current whatisup activity

            */

            setImage(whatisUp);

            add(b2);

            /**

            * Adding action listener for b1

            */

            b1.addActionListener(new ActionListener() {

                  public void actionPerformed(ActionEvent arg0) {

                        /**

                        * Setting a random whatisup message in button b2 everytime

                        * button b1 is clicked (Answer for first part)

                        */

                        whatisUp = st1.WhatIsUp();

                        b2.setText(whatisUp);

                        /**

                        * Updating the button icon (Answer for part2)

                        */

                        setImage(whatisUp);

                  }

            });

      }

      /**

      * method to update the second button's icon based on given string whatisup

      * message

      */

      public void setImage(String whatIsUp) {

            if (whatisUp.equalsIgnoreCase("reading")) {

                  b2.setIcon(readingIcon);

            } else if (whatisUp.equalsIgnoreCase("talking")) {

                  b2.setIcon(talkingIcon);

            } else {

                  b2.setIcon(interactingIcon);

            }

      }

}

//reading.jpg

//interacting.jpg

//talking.jpg

/*OUTPUT*/

My First Frame eading

y First Frame