Object Oriented Programming

Question

Create a java program in swing that will produce the given output below.

The program will have panels with background (10 pts.) and a border with title (10 pts.),

each has three buttons (10 pts.) The frame should be non-resizable (5 pts.), should be

placed at the center of the screen when you run the program (5 pts.), and terminate the

program once the exit button is clicked (5 pts.). Apply necessary layout, border, color and

font style and type (5 pts.).

Answer 1

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

import javax.swing.event.*;

import java.awt.BorderLayout;

import javax.swing.BorderFactory;

import javax.swing.border.Border;

public class MyPanel extends JPanel

{

private JButton cmdButton1;

private JButton cmdButton2;

private JButton cmdButton3;

private String strTitle;

private Color backgroundColor;

public MyPanel(String strTitleStr, Color backColor)

{

strTitle = new String(strTitleStr);

this.backgroundColor = backColor;

//construct components

cmdButton1 = new JButton ("Button 1");

cmdButton2 = new JButton ("Button 2");

cmdButton3 = new JButton ("Button 3");

//adjust size and set layout

setPreferredSize (new Dimension (200, 150));

setLayout (null);

//add components

add (cmdButton1);

add (cmdButton2);

add (cmdButton3);

//set component bounds (only needed by Absolute Positioning)

cmdButton1.setBounds (35, 30, 100, 20);

cmdButton2.setBounds (35, 55, 100, 20);

cmdButton3.setBounds (35, 85, 100, 20);

Border blackline = BorderFactory.createTitledBorder(strTitle);

setBorder(blackline);

setBackground(backgroundColor);

cmdButton1.addActionListener(

new ActionListener()

{

@Override public void actionPerformed(ActionEvent e)

{

JOptionPane.showMessageDialog(null,"Button1");

}

}

);

cmdButton2.addActionListener(

new ActionListener()

{

@Override public void actionPerformed(ActionEvent e)

{

JOptionPane.showMessageDialog(null,"Button2");

}

}

);

cmdButton3.addActionListener(

new ActionListener()

{

@Override public void actionPerformed(ActionEvent e)

{

JOptionPane.showMessageDialog(null,"Button3");

}

}

);

}

}

//*********************************************************************************//

import java.awt.event.*;

import javax.swing.*;

import javax.swing.event.*;

public class MyFrame extends javax.swing.JFrame

{

private final MyPanel leftPanel;

private final MyPanel rightPanel;

public MyFrame()

{

leftPanel = new MyPanel("Left Panel",Color.RED); // our top component

rightPanel = new MyPanel("Right Panel",Color.GREEN); // our bottom component

// now lets define the default size of our window and its layout:

setPreferredSize(new Dimension(500, 200));

setResizable(false);

// the contentPane is the container that holds all our components

getContentPane().setLayout(new GridLayout()); // the default GridLayout is like a grid with 1 column and 1 row,

// we only add one element to the window itself

getContentPane().add(leftPanel);

getContentPane().add(rightPanel);

pack(); // calling pack() at the end, will ensure that every layout and size we just defined gets applied before the stuff becomes visible

setLocationRelativeTo(null);

}

public static void main(String args[]){

EventQueue.invokeLater(new Runnable(){

@Override

public void run(){

MyFrame frame = new MyFrame();

frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);

frame.setVisible(true);

}

});

}

}