Homework SourseThis is Java programing Modify the ballsjava program so that
This is Java programing. Modify the balls.java program so that all the five up-and-down motion balls have different size and different colors. Also, add 5 left-and-right motion balls that have different size, color, and speed. You have to use the random class and the DrawingPanelclass. use DrawingPanel.java.
import java.awt.*;
import java.util.*;
public class balls {
public static int width = 800;
public static int height = 600;
public static int b1x;
public static int b1y;
public static int b1s;
public static int b2x;
public static int b2y;
public static int b2s;
public static int b3x;
public static int b3y;
public static int b3s;
public static int b4x;
public static int b4y;
public static int b4s;
public static int b5x;
public static int b5y;
public static int b5s;
public static String b1d=\"down\";
public static String b2d=\"down\";
public static String b3d=\"down\";
public static String b4d=\"down\";
public static String b5d=\"down\";
public static int ballSize=50;
public static void main(String[] args) {
DrawingPanel panel = new DrawingPanel(width, height);
panel.setBackground(Color.LIGHT_GRAY);
Graphics g = panel.getGraphics();
g.setColor(Color.GREEN);
getInitialStatus();
while (true){
for (int i=1; i<=5; i++) {
switch(i) {
case 1:
if (b1d==\"up\") {
b1y-=b1s;
if (b1y<=0) {
b1d=\"down\";
}
} else {
b1y+=b1s;
if (b1y>=height-ballSize) {
b1d=\"up\";
}
}
g.fillOval(b1x,b1y, ballSize, ballSize);
break;
case 2:
if (b2d==\"up\") {
b2y-=b2s;
if (b2y<=0) {
b2d=\"down\";
}
} else {
b2y+=b2s;
if (b2y>=height-ballSize) {
b2d=\"up\";
}
}
g.fillOval(b2x,b2y, ballSize, ballSize);
break;
case 3:
if (b3d==\"up\") {
b3y-=b3s;
if (b3y<=0) {
b3d=\"down\";
}
} else {
b3y+=b3s;
if (b3y>=height-ballSize) {
b3d=\"up\";
}
}
g.fillOval(b3x,b3y, ballSize, ballSize);
break;
case 4:
if (b4d==\"up\") {
b4y-=b4s;
if (b4y<=0) {
b4d=\"down\";
}
} else {
b4y+=b4s;
if (b4y>=height-ballSize) {
b4d=\"up\";
}
}
g.fillOval(b4x,b4y, ballSize, ballSize);
break;
case 5:
if (b5d==\"up\") {
b5y-=b5s;
if (b5y<=0) {
b5d=\"down\";
}
} else {
b5y+=b5s;
if (b5y>=height-ballSize) {
b5d=\"up\";
}
}
g.fillOval(b5x,b5y, ballSize, ballSize);
break;
}
}
panel.sleep(100);
g.clearRect(0,0,width,height);
}
}
public static void getInitialStatus(){
Random rand = new Random();
b1x=rand.nextInt(width-ballSize);
b2x=rand.nextInt(width-ballSize);
b3x=rand.nextInt(width-ballSize);
b4x=rand.nextInt(width-ballSize);
b5x=rand.nextInt(width-ballSize);
b1y=0;
b2y=0;
b3y=0;
b4y=0;
b5y=0;
b1s=rand.nextInt(30)+1;
b2s=rand.nextInt(30)+1;
b3s=rand.nextInt(30)+1;
b4s=rand.nextInt(30)+1;
b5s=rand.nextInt(30)+1;
}
}
Solution
//Random ball size, color and time of 5 balls
//balls.java
import java.awt.*;
import java.util.*;
public class balls {
public static int width = 800;
public static int height = 600;
public static int b1x;
public static int b1y;
public static int b1s;
public static int b2x;
public static int b2y;
public static int b2s;
public static int b3x;
public static int b3y;
public static int b3s;
public static int b4x;
public static int b4y;
public static int b4s;
public static int b5x;
public static int b5y;
public static int b5s;
public static String b1d=\"down\";
public static String b2d=\"down\";
public static String b3d=\"down\";
public static String b4d=\"down\";
public static String b5d=\"down\";
public static int ballSize;
public static void main(String[] args) {
//Create an instance of Random class
Random rand=new Random();
DrawingPanel panel = new DrawingPanel(width, height);
panel.setBackground(Color.LIGHT_GRAY);
Graphics g = panel.getGraphics();
getInitialStatus();
while (true){
for (int i=1; i<=5; i++) {
//create a random number of ball size in a range of 1 to 50
ballSize=(int)(rand.nextInt(50)+1);
//create a random number of colors for red, green and blue colores
//in a range of 0 to 255
g.setColor(new Color((int)(rand.nextInt(255)),(int)(rand.nextInt(255)),
(int)(rand.nextInt(255))));
//Create an time of sleep in a range of 1 to 100
panel.sleep((int)(rand.nextInt(100)+1));
switch(i)
{
case 1:
if (b1d==\"up\") {
b1y-=b1s;
if (b1y<=0) {
b1d=\"down\";
}
} else {
b1y+=b1s;
if (b1y>=height-ballSize) {
b1d=\"up\";
}
}
g.fillOval(b1x,b1y, ballSize, ballSize);
break;
case 2:
if (b2d==\"up\") {
b2y-=b2s;
if (b2y<=0) {
b2d=\"down\";
}
} else {
b2y+=b2s;
if (b2y>=height-ballSize) {
b2d=\"up\";
}
}
g.fillOval(b2x,b2y, ballSize, ballSize);
break;
case 3:
if (b3d==\"up\") {
b3y-=b3s;
if (b3y<=0) {
b3d=\"down\";
}
} else {
b3y+=b3s;
if (b3y>=height-ballSize) {
b3d=\"up\";
}
}
g.fillOval(b3x,b3y, ballSize, ballSize);
break;
case 4:
if (b4d==\"up\") {
b4y-=b4s;
if (b4y<=0) {
b4d=\"down\";
}
} else {
b4y+=b4s;
if (b4y>=height-ballSize) {
b4d=\"up\";
}
}
g.fillOval(b4x,b4y, ballSize, ballSize);
break;
case 5:
if (b5d==\"up\") {
b5y-=b5s;
if (b5y<=0) {
b5d=\"down\";
}
} else {
b5y+=b5s;
if (b5y>=height-ballSize) {
b5d=\"up\";
}
}
g.fillOval(b5x,b5y, ballSize, ballSize);
break;
}
}
g.clearRect(0,0,width,height);
}
}
public static void getInitialStatus(){
Random rand = new Random();
b1x=rand.nextInt(width-ballSize);
b2x=rand.nextInt(width-ballSize);
b3x=rand.nextInt(width-ballSize);
b4x=rand.nextInt(width-ballSize);
b5x=rand.nextInt(width-ballSize);
b1y=0;
b2y=0;
b3y=0;
b4y=0;
b5y=0;
b1s=rand.nextInt(30)+1;
b2s=rand.nextInt(30)+1;
b3s=rand.nextInt(30)+1;
b4s=rand.nextInt(30)+1;
b5s=rand.nextInt(30)+1;
}
}
