Write a program to implement thread, applets and graphics by implementing animation of ball moving.
3 years ago
OOP Java
Source code :
import java.awt.*; import java.applet.*;
/* <applet code="MovingBall.class" height=300 width=300></applet> */ public class MovingBall extends Applet implements Runnable
{
int x,y,dx,dy,w,h; Thread t; boolean flag; public void init()
{
w=getWidth(); h=getHeight();
setBackground(Color.yellow); x=100;
y=10;
dx=10; dy=10;
}
public void start()
{
flag=true;
t=new Thread(this); t.start();
}
public void paint(Graphics g)
{
g.setColor(Color.blue); g.fillOval(x,y,50,50);
Java Lab Manual Page 14
}
public void run()
{
while(flag)
{
if((x+dx<=0)||(x+dx>=w)) dx=-dx;
if((y+dy<=0)||(y+dy>=h)) dy=-dy;
x+=dx; y+=dy; repaint(); try
{
Thread.sleep(300);
}
catch(InterruptedException e)
{}
}
}
public void stop()
{
t=null; flag=false;
}
}
Surya Bikram Bhandari
Nov 1, 2021