Bouncing Ball without Main Method

Question

Hi. I needed to reserch on the Internet sample code for a blue bouncing ball which I did below. However, I try coding a main class to start the GUI applet and it's not working. How can I create the appropriate class that would contain the main method to start this particular application which the author did not provide? The actual applet works great and matches the objective of my research (http://www.terrence.com/java/ball.html). The DefaultCloseOperation issues an error so that's why is shown as remarks // below. Then the code in the Ball.java class issues some warning about components being deprecated as shown below. Thank you for your comments and suggestions.
Compiling 2 source files to C:\Documents and Settings\Fausto Rivera\My Documents\NetBeansProjects\Rivera_F_IT271_0803B_01_PH3_DB\build\classes
C:\Documents and Settings\Fausto Rivera\My Documents\NetBeansProjects\Rivera_F_IT271_0803B_01_PH3_DB\src\Ball.java:32: warning: [deprecation] size() in java.awt.Component has been deprecated
    size = this.size();
C:\Documents and Settings\Fausto Rivera\My Documents\NetBeansProjects\Rivera_F_IT271_0803B_01_PH3_DB\src\Ball.java:93: warning: [deprecation] mouseDown(java.awt.Event,int,int) in java.awt.Component has been deprecated
  public boolean mouseDown(Event e, int x, int y) {
2 warnings
import javax.swing.*;
public class BallMain {
* @param args the command line arguments
public static void main(String[] args) {
Ball ball = new Ball();
//ball.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
ball.setSize( 500, 175 ); // set frame size
ball.setVisible( true ); // display frame
import java.awt.*;*
*import java.applet.*;
import java.util.Vector;
// Java Bouncing Ball
// Terrence Ma
// Modified from Java Examples in a Nutshell
public class Ball extends Applet implements Runnable {
int x = 150, y = 100, r=50; // Position and radius of the circle
int dx = 8, dy = 5; // Trajectory of circle
Dimension size; // The size of the applet
Image buffer; // The off-screen image for double-buffering
Graphics bufferGraphics; // A Graphics object for the buffer
Thread animator; // Thread that performs the animation
boolean please_stop; // A flag asking animation thread to stop
/** Set up an off-screen Image for double-buffering */
public void init() {
size = this.size();
buffer = this.createImage(size.width, size.height);
bufferGraphics = buffer.getGraphics();
/** Draw the circle at its current position, using double-buffering */
public void paint(Graphics g) {
// Draw into the off-screen buffer.
// Note, we could do even better clipping by setting the clip rectangle
// of bufferGraphics to be the same as that of g.
// In Java 1.1: bufferGraphics.setClip(g.getClip());
bufferGraphics.setColor(Color.white);
bufferGraphics.fillRect(0, 0, size.width, size.height); // clear the buffer
bufferGraphics.setColor(Color.blue);
bufferGraphics.fillOval(x-r, y-r, r*2, r*2); // draw the circle
// Then copy the off-screen buffer onto the screen
g.drawImage(buffer, 0, 0, this);
/** Don't clear the screen; just call paint() immediately
* It is important to override this method like this for double-buffering */
public void update(Graphics g) { paint(g); }
/** The body of the animation thread */
public void run() {
while(!please_stop) {
// Bounce the circle if we've hit an edge.
if ((x - r + dx < 0) || (x + r + dx > size.width)) dx = -dx;
if ((y - r + dy < 0) || (y + r + dy > size.height)) dy = -dy;
// Move the circle.
x += dx; y += dy;
// Ask the browser to call our paint() method to redraw the circle
// at its new position. Tell repaint what portion of the applet needs
// be redrawn: the rectangle containing the old circle and the
// the rectangle containing the new circle. These two redraw requests
// will be merged into a single call to paint()
repaint(x-r-dx, y-r-dy, 2*r, 2*r); // repaint old position of circle
repaint(x-r, y-r, 2*r, 2*r); // repaint new position of circle
// Now pause 50 milliseconds before drawing the circle again.
try { Thread.sleep(50); } catch (InterruptedException e) { ; }
animator = null;
/** Start the animation thread */
public void start() {
if (animator == null) {
please_stop = false;
animator = new Thread(this);
animator.start();
/** Stop the animation thread */
public void stop() { please_stop = true; }
/** Allow the user to start and stop the animation by clicking */
public boolean mouseDown(Event e, int x, int y) {
if (animator != null) please_stop = true; // if running request a stop
else start(); // otherwise start it.
return true;
}

Answer 1

FRiveraJr wrote:
I believe that I stated that this not my code and it was code that I researched.and why the hll should this matter at all? If you want help here from volunteers, your code or not, don't you think that you should take the effort to format it properly?