例7-12.java

医院无线局域网设计方案 医院无线局域网设计方案

//example 7-12
import java.applet.Applet;
import java.awt.Graphics;
public class tt extends Applet
{
   public void circle(Graphics g,int x,int y,int rx,int ry)
   {
   	  g.drawOval(x-rx,y-ry,2*rx,2*ry);
   }
   public void paint(Graphics g)
   {
   	  int x0=50,y0=50,rx=40,ry=40;
   	  int dx=100,n=5;
   	  g.drawLine(x0-rx,y0,x0+(n-1)*dx+rx,y0);
   	  for(int i=0;i<n;i++)
   	  {
   	    int x=x0+i*dx;
   	    circle(g,x,y0,rx,ry);
   	    g.drawLine(x,y0-ry,x,y0+ry);
   	    ry-=5;	
   	  }
   }
}