| <%@ page language="java"%> |
| |
| <html> |
| <head> |
| <title>Sample Application Compute JSP Page</title> |
| </head> |
| <body bgcolor=white> |
| |
| <table border="0"> |
| <tr> |
| <td align=center> |
| <img src="images/bridge-small.png"> |
| </td> |
| <td> |
| <h1>Sample Brooklyn Deployed WebApp (Compute Primes JSP)</h1> |
| This is the output of a JSP page that is part of the Hello, World application, |
| deployed by brooklyn, to show <b>compute load by generating primes</b>. |
| </td> |
| </tr> |
| </table> |
| |
| <% |
| Object nx = request.getParameter("n"); |
| if (nx==null) { |
| %> |
| <p>Please supply a value <i>n</i> in the URL, to compute primes up to <i>n</i>.</p> |
| <form action="primes.jsp" method="GET"> |
| <table> |
| <tr><td>Count primes up to: </td><td><input type="text" name="n"></td></tr> |
| </table> |
| <input type="submit" value="Submit"/> |
| </form> |
| |
| <% |
| } else { |
| long n = Long.parseLong(""+nx); |
| long startTime = System.currentTimeMillis(); |
| int count = 0; |
| for (long k=2; k<=n; k++) { |
| // check if k prime |
| boolean prime = true; |
| for (long j=2; j*j<=k; j++) { |
| if (k%j==0) { |
| prime = false; |
| break; |
| } |
| } |
| if (prime) count++; |
| } |
| long totalTime = System.currentTimeMillis() - startTime; |
| %> |
| <p>There are <%= count %> primes less than or equal to <%= n %>.</p> |
| <p>Computation took <%= totalTime %> ms.</p> |
| <% |
| } |
| %> |
| |
| </body> |
| </html> |
