import java.awt.*;
public class Sneg extends Frame implements Runnable{
 Odna[] snezhinki;
 public Sneg(){
    snezhinki=new Odna[25];
    for(int i=0; i<snezhinki.length; i++)
        snezhinki[i]=new Odna();
       setSize(200, 200);
       setVisible(true);

       new Thread(this).start();
   }
       public void joonista(){
           Image pilt=createImage(200, 200);
           Graphics piltg=pilt.getGraphics();
                piltg.setColor(Color.blue);
                piltg.fillRect(0,0,200,200);
                piltg.setColor(Color.white);
              for(int i=0; i<snezhinki.length; i++){
                  piltg.fillOval(snezhinki[i].x()-5, snezhinki[i].y()-5, 10, 10);   }
                  this.getGraphics().drawImage(pilt, 0, 0, this); }
           public void run(){
                   while(true){
                        joonista();
                        Thread.yield();
                        try{Thread.sleep(100);}catch(Exception e){}
                        }
               }

        public static void main(String argumendid[]){
          new Sneg();
          }
}

        class Odna extends Thread{
             double x=100, y=200, dy;
        public Odna(){
                    x=200*Math.random();
                    dy=3*Math.random();
                    start();
                    }
             public int x(){
                   return (int)x;  }
             public int y(){
                   return (int)y;  }
             public void run(){
                   setPriority(Thread.NORM_PRIORITY-2);
                       while(true){
                          x=x+5-10*Math.random();
                          if(y>200){
                              y=0;
                              dy=3*Math.random();
                              x=200*Math.random();
                           }
                          y=y+dy;
                          yield();

                          try{Thread.sleep(100);
                             }catch(Exception e){}
                       }
              }}