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import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;
public class MyServlet extends HttpServlet implements Runnable {
long lastprime = 0;
Date lastprimeModified = new Date();
Thread searcher;
public void init() throws ServletException {
searcher = new Thread(this);
searcher.setPriority(Thread.MIN_PRIORITY);
searcher.start();
}
public void run() {
long candidate = 2;
while (true) {
candidate += 2;
try {
searcher.sleep(5000);
}
catch (InterruptedException ignored) { }
lastprime = 1;
}
}
public void doGet(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
res.setContentType("text/plain");
PrintWriter out = res.getWriter();
if (lastprime == 0) {
out.println("Still searching for first prime...");
}
else {
out.println("The last prime discovered was " + lastprime);
out.println(" at " + lastprimeModified);
}
}
public void destroy() {
searcher.stop();
}
}
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Download: ServletWithThread.zip( 89 k)