public MovingBalls() {
f = new Frame();
b = new Button("ok");
b1 = new Button("go");
p =
new Panel() {
public void paint(Graphics g) {
Color c1 =
new Color(
(int) (Math.random() * 255),
(int) (Math.random() * 255),
(int) (Math.random() * 255));
g.setColor(c1);
g.fillOval(bx[0], by[0], 2 * br[0], 2 * br[0]);
Color c2 =
new Color(
(int) (Math.random() * 255),
(int) (Math.random() * 255),
(int) (Math.random() * 255));
g.setColor(c2);
g.fillOval(bx[1], by[1], 2 * br[1], 2 * br[1]);
Color c3 =
new Color(
(int) (Math.random() * 255),
(int) (Math.random() * 255),
(int) (Math.random() * 255));
g.setColor(c3);
g.fillOval(bx[2], by[2], 2 * br[2], 2 * br[2]);
Color c4 =
new Color(
(int) (Math.random() * 255),
(int) (Math.random() * 255),
(int) (Math.random() * 255));
g.setColor(c4);
g.fillOval(bx[3], by[3], 2 * br[3], 2 * br[3]);
Color c5 =
new Color(
(int) (Math.random() * 255),
(int) (Math.random() * 255),
(int) (Math.random() * 255));
g.setColor(c5);
g.fillOval(bx[4], by[4], 2 * br[4], 2 * br[4]);
Color c6 =
new Color(
(int) (Math.random() * 255),
(int) (Math.random() * 255),
(int) (Math.random() * 255));
g.setColor(c6);
g.fillOval(bx[5], by[5], 2 * br[5], 2 * br[5]);
}
};
p1 = new Panel();
f.add(p1, BorderLayout.SOUTH);
f.add(p, BorderLayout.CENTER);
p1.add(b);
p1.add(b1);
b.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (i < 6) {
x = 100;
y = 100;
r = (int) (Math.random() * 50);
bx[i] = x + (int) (Math.random() * 50);
by[i] = y + (int) (Math.random() * 50);
br[i] = r;
i++;
p.repaint();
} else if (i == 6) {
i = 0;
}
}
});
b1.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent e) {
while (true) {
for (int l = 0; l < 6; l++) {
bx[l] = bx[l] + dx_m[l];
by[l] = by[l] + dy_m[l];
if (by[l] > p.getHeight()) {
dy_m[l] = -dy_m[l];
}
if (bx[l] > p.getWidth()) {
dx_m[l] = -dx_m[l];
}
if (by[l] < 0) {
dy_m[l] = -dy_m[l];
}
if (bx[l] < 0) {
dx_m[l] = -dx_m[l];
}
}
/*
bx[0] = bx[0] + dx;
by[0] = by[0] + dy;
if(by[0]>p.getHeight() ) {
dy=-dy;
}
if(bx[0]>p.getWidth()) {
dx=-dx;
}
if(by[0]<0 ) {
dy=-dy;
}
if(bx[0]<0) {
dx=-dx;
}
*/
/*
bx[1] = bx[1] + dx1;
by[1] = by[1] - dy1;
if(by[1]>p.getHeight() ) {
dy1=-dy1;
}
if(bx[1]>p.getWidth()) {
dx1=-dx1;
}
if(by[1]<0 ) {
dy1=-dy1;
}
if(bx[1]<0) {
dx1=-dx1;
}
bx[2] = bx[2] - dx2;
by[2] = by[2] + dy2;
if(by[2]>p.getHeight() ) {
dy2=-dy2;
}
if(bx[2]>p.getWidth()) {
dx2=-dx2;
}
if(by[2]<0 ) {
dy2=-dy2;
}
if(bx[2]<0) {
dx2=-dx2;
}
bx[3] = bx[3] - dx3;
by[3] = by[3] - dy3;
if(by[3]>p.getHeight() ) {
dy3=-dy3;
}
if(bx[3]>p.getWidth()) {
dx3=-dx3;
}
if(by[3]<0 ) {
dy3=-dy3;
}
if(bx[3]<0) {
dx3=-dx3;
}
bx[4] = bx[4];
by[4] = by[4] - dy4;
if(by[4]>p.getHeight() ) {
dy4=-dy4;
}
if(bx[4]>p.getWidth()) {
dx4=-dx4;
}
if(by[4]<0 ) {
dy4=-dy4;
}
if(bx[4]<0) {
dx4=-dx4;
}
bx[5] = bx[5] - dx5;
by[5] = by[5] ;
if(by[5]>p.getHeight() ) {
dy5=-dy5;
}
if(bx[5]>p.getWidth()) {
dx5=-dx5;
}
if(by[5]<0 ) {
dy5=-dy5;
}
if(bx[5]<0) {
dx5=-dx5;
}
*/
for (int i = 0; i < 10000000; i++) {}
p.update(p.getGraphics());
}
}
});
f.addWindowListener(this);
f.addMouseMotionListener(this);
p.addMouseListener(this);
f.setSize(600, 600);
f.setVisible(true);
}
