myApplet.java

importjava.applet.Applet;
importjava.awt.Color;
importjava.awt.Graphics;

classBall {
intx, y, radius, dx, dy;
ColorBallColor;

publicBall(intx, inty, intradius, intdx, intdy, ColorbColor) {
this.x = x;
this.y = y;
this.radius = radius;
this.dx = dx;
this.dy = dy;
BallColor = bColor;
 }
}

publicclassmyAppletextendsAppletimplementsRunnable {
BallredBall;

publicvoidinit() {
redBall = newBall(150, 0, 20, 2, 5, Color.red);
Threadt = newThread(this);
t.start();
 }

publicvoidpaint(Graphicsg) {
g.setColor(redBall.BallColor);
g.fillOval(redBall.x, redBall.y, redBall.radius, redBall.radius);
 }

publicvoidrun() {
try {
Colorc = redBall.BallColor;
redBall.BallColor = newColor(c.getRed(), c.getBlue() + 20, c.getGreen());
redBall.y = redBall.y + redBall.dy;
 } catch (Exceptione) {
 }
while (redBall.BallColor.getBlue() != 255) {
try {
displacementOperation(redBall);
Thread.sleep(1000);
repaint();
 } catch (Exceptione) {
 }
 }
 }

publicvoiddisplacementOperation(Ballball) {
Colorc = ball.BallColor;
ball.BallColor = newColor(c.getRed(), c.getBlue() + 20, c.getGreen());
ball.y = ball.y + ball.dy;
 }
}