下大雪
2017-06-30 本文已影响0人
linhaoyou
import java.awt.*;
public class MySnow{
public static void main(String[] args){
Frame w = new Frame();
w.setSize(1024, 768);
w.setBackground(Color.BLACK);
MyPanel mp = new MyPanel();
w.add(mp);
Thread t = new Thread(mp);
t.start();
w.show();
}
}
class MyPanel extends Panel implements Runnable{
int x[] = new int[300];
int y[] = new int[300];
public MyPanel(){
for(int i=0;i<300;i++){
x[i] = (int)(Math.random()*1024);
y[i] = (int)(Math.random()*768);
}
}
public void paint(Graphics g){
g.setColor(Color.WHITE);
for(int i=0;i<300;i++){
g.drawString("*",x[i], y[i]);
}
}
public void run(){
while(true){
try{
for(int i=0; i<300; i++){
y[i]++;
if(y[i]>768){
y[i] = 0;
}
}
Thread.sleep(30);
}catch(Exception e){
}
repaint();
}
}
}
