Test web page multiple thread support

package test2;

import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.InputStreamReader;
import java.net.URL;

public class ThreadSafetyTest implements Runnable {

    public static void main(String args[]) {
        long t0 = System.currentTimeMillis();
        Runnable run = new ThreadSafetyTest();
       
        /** 20 consecutice accesses used   ms */
       // for (int i = 0; i < 20; i++) {
        //    run.run();
        //}
       
        /** 20 concurrent  accesses used   ms (the last thread time */
         for (int i = 0; i < 10; i++) {
            Thread thread = new Thread(run);
           // thread.setDaemon(true); // so program can exit
            thread.start();
        }
       
        long t1 = System.currentTimeMillis();
        System.out.println("Program time used = " + (t1 - t0) + " ms.");
    }

    public void run() {
        long t0 = System.currentTimeMillis();
        DataInputStream dis;
       
        try {
            String urlString = "http://localhost:8011/mrcjava/servlet/MRCJAVALIB.I00116a";
            //String urlString = "http://www.ibm.com";
            URL url = new URL(urlString);
            dis = new DataInputStream(url.openConnection().getInputStream());
            BufferedReader in = new BufferedReader(new InputStreamReader(dis));
            String total = "";
            String line = "";
            while ((line = in.readLine()) != null) {
                total += line;
            }      
            in.close();
           
            long t1 = System.currentTimeMillis();
            System.out.println("Response size = " + total.length()
                    + ",  time used = " + (t1 - t0) + " ms.");
        } catch (Exception e) {
            System.out.println(e);
        }
    }

}

Lets run it against a server on a windows XP box.

When accessing a page that does not support multiple threading (I00116s) the output is:

Response size = 16602, time used = 531 ms.
Response size = 16602, time used = 969 ms.
Response size = 16602, time used = 1391 ms.
Response size = 16602, time used = 1766 ms.
Response size = 16602, time used = 2266 ms.
Response size = 16602, time used = 2672 ms.
Response size = 16602, time used = 3078 ms.
Response size = 16602, time used = 3453 ms.
Response size = 16602, time used = 3844 ms.
Response size = 16602, time used = 4234 ms.

You can see the longest response time is 4,234 mini seconds.

When accessing a page that supports multiple threading (I00116a) the output is:

Response size = 17399, time used = 281 ms.
Response size = 17399, time used = 359 ms.
Response size = 17399, time used = 672 ms.
Response size = 17399, time used = 719 ms.
Response size = 17399, time used = 875 ms.
Response size = 17399, time used = 922 ms.
Response size = 17399, time used = 953 ms.
Response size = 17399, time used = 953 ms.
Response size = 17399, time used = 969 ms.
Response size = 17399, time used = 969 ms.

You can see the longest response time is 969 mini seconds.