Moving ball
import java.awt.*;import java.applet.*;
import java.lang.Thread;
import java.lang.*;
public class Moving_ball extends Applet
{
Thread t;
int i;
int x=34,y=14;
public void init()
{
t=new Thread();
}
public void paint(Graphics g)
{
for(i=1;i<=5;i++)
{
g.fillOval(x,y,40,40);
g.setColor(Color.red);
x=x+30;
y=y+30;
repaint();
try
{
t.sleep(1000);
}
catch(Exception e)
{}
}
}
public static void main(String args[])
{
Moving_ball mb=new Moving_ball();
}
}
In the above program I would like to make the ball appear as if it is rolling.I would be grateful if u help!!!!!
View Answers
February 9, 2010 at 12:27 PM
Hi Friend,
Try the following code;
import javax.swing.*;
import java.util.*;
import java.awt.*;
public class Moving_ball extends JApplet{
int x,y;
int X1, Y1;
int R = 10;
int S = 10;
java.util.Timer timer;
TimerTask task;
public void init() {
x=75;
y=50;
X1=2*S;
Y1=S;
timer= new java.util.Timer();
task= new TimerTask() {
public void run() {
x+= X1;
y+= Y1;
if ((x-R) <= 0)
X1*= -1;
else if ((x+R) >= getWidth())
X1*= -1;
if ((y-R) <= 0)
Y1*= -1;
else if ((y+R) >= getHeight())
Y1*= -1;
Graphics g= getGraphics();
g.setColor(Color.WHITE);
g.fillRect(0,0,getWidth(),getHeight());
g.setColor(Color.BLUE);
g.fillOval(x-R, y-R, R*2, R*2);
}
};
timer.schedule( task , 0, 50);
}
}
Call this applet with the following applet.html :
<html>
<body>
<h1>Java Applet Demo</h1>
<applet code=Moving_ball.class width=500 height=400>
</applet>
</body>
</html>
For more information, visit the following link:
http://www.roseindia.net/java/example/java/swing/graphics2D/bouncing-thread.shtml
Thanks
Try the following code;
import javax.swing.*;
import java.util.*;
import java.awt.*;
public class Moving_ball extends JApplet{
int x,y;
int X1, Y1;
int R = 10;
int S = 10;
java.util.Timer timer;
TimerTask task;
public void init() {
x=75;
y=50;
X1=2*S;
Y1=S;
timer= new java.util.Timer();
task= new TimerTask() {
public void run() {
x+= X1;
y+= Y1;
if ((x-R) <= 0)
X1*= -1;
else if ((x+R) >= getWidth())
X1*= -1;
if ((y-R) <= 0)
Y1*= -1;
else if ((y+R) >= getHeight())
Y1*= -1;
Graphics g= getGraphics();
g.setColor(Color.WHITE);
g.fillRect(0,0,getWidth(),getHeight());
g.setColor(Color.BLUE);
g.fillOval(x-R, y-R, R*2, R*2);
}
};
timer.schedule( task , 0, 50);
}
}
Call this applet with the following applet.html :
<html>
<body>
<h1>Java Applet Demo</h1>
<applet code=Moving_ball.class width=500 height=400>
</applet>
</body>
</html>
For more information, visit the following link:
http://www.roseindia.net/java/example/java/swing/graphics2D/bouncing-thread.shtml
Thanks
April 23, 2012 at 4:26 PM
hi frnds ,
i need to move an object with different velocity or speed that should be accelerate ? how we classify THE SPEED is 30 km / hr or 20km/hr or 2 km/hr.... reply me *Email ID Deleted*
April 23, 2012 at 4:27 PM
i need an object to move with velocity , speed and accelerate that ? how can an object move with speed 30km/ hr , 20 km. hr or 3 km / hr ?
thanks for giving us knowledege og java in various blogs and posts
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Moving ball - Applet
java.lang.Thread; import java.lang.*; public class Moving_ball extends Applet...) {} } } public static void main(String args[]) { Moving_ball mb=new Moving_ball(); } } In the above program I would like to make the ball appear
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