package CircleServlet;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;
public class CircleServlet extends HttpServlet {
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println( " Circle Info
\n");
try{
String sdiam = request.getParameter("diameter");
double diam = Double.parseDouble(sdiam);
out.println("
Diam:
" + diam +
"
Area:
" + diam/2.0 * diam/2.0 * 3.14159 +
"
Perimeter:
" + 2.0 * diam/2.0 * 3.14159);
} catch ( Exception e ){
out.println("Please enter a valid number");
}
out.println("