<% @ page contentType="text/HTML. Charset=GB2312 "% & gt;
<body bgcolor=cyan>
Round the initial radius is: & lt; %=circle. The getRadius () % & gt;
<% double newRadius=100;
Circle. SetRadius (newRadius);
%>
Modify the radius for & lt; % %=newRadius & gt;
Circle radius is at present: & lt; %=circle. The getRadius () % & gt;
The circumference of the circle is: & lt; %=circle. The circleLength () % & gt;
The area of a circle is: & lt; %=circle. The circleArea () % & gt;