Create graphics classes based on the Java Swing Library. myJPanel.java and other

Question

Create graphics classes based on the Java Swing Library. myJPanel.java and other classes as requested below. Because you cannot do much with a standard JPanel we need to create a smart version of JPanel. Once we have our own JPanel we can

-           add JButtons to it.
-           set different colors to the background.

For this lab:

-create your own version of a JPanel using inheritance
-Change our myJFrame.java so that it now creates your version of a JPanel instead of the standard JPanel.

Suggestions
In order to add a JButton to a JPanel:
JButton j1 = new JButton (

Explanation / Answer

// MyPanel.java

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

// text panel

class textPanel extends JPanel {
// override the paintComponent method
public void paintComponent(Graphics g) {
super.paintComponent(g);
g.drawString("Hello Panel!", 75, 100);
} //paintComponent
} //class textPanel

class MyFrame extends JFrame {
public MyFrame(String s) {
   // Frame Parameters
   setTitle(s);
   setSize(300,200); // default size is 0,0
   setLocation(10,200); // default is 0,0 (top left corner)

   // Window Listeners
   addWindowListener(new WindowAdapter() {
   public void windowClosing(WindowEvent e) {
       dispose();
       System.exit(0); // exit is still needed after dispose()!
   } //windowClosing
   }); //addWindowLister

   // Add Panels
   Container contentPane = getContentPane();
   contentPane.add(new textPanel());
   contentPane.setBackground(Color.pink);
} //constructor MyFrame
} //class MyFrame

public class MyPanel {
public static void main(String[] args) {
JFrame f = new MyFrame("My Hello Panel!");
f.setVisible(true); // equivalent to f.show()!
} //main
} //class MyPanel

/* NOTES:
   WindowAdapter() is class that implements WindowListers
   with null methods for all the 7 methods of WindowListeners!
   It is found in java.awt.event.*.
*/

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