Name: clC74495 Date: 06/08/98


Please run the following code:

import java.text.*;
import java.util.*;
import java.io.*;

class FormatTester
{
    // Constants. Modify to your needs.
    static String timeZoneID = "ECT";
    static int THREADNUMBER = 3;
    static int ITERATIONS = 1000;

    // The format of the date preceeding all log file entries.
    static SimpleDateFormat simpleDateFormat;

    static PrintWriter log;

    public static void main(String[] args)
    {
        TestThread[] testThreadArray = new TestThread[FormatTester.THREADNUMBER];

        System.out.println("This is FormatTester.");

        // Initialize date format and set up the correct time zone.
        simpleDateFormat = new SimpleDateFormat("yyyyMMdd-HHmmss");
        simpleDateFormat.setTimeZone(TimeZone.getTimeZone(FormatTester.timeZoneID));

        Date date = new Date();
        String timeStamp = FormatTester.simpleDateFormat.format(date);
        String logFileName = timeStamp + "-log.txt";
        File logFile = new File(System.getProperty("user.dir"), logFileName);
        FileOutputStream logFileOutputStream = null;

        try
        {
            logFileOutputStream = new FileOutputStream(logFile);
        }
        catch (IOException e)
        {
            System.out.println("Cannot create log file. " + e);
            System.out.println("Exiting.");
            System.exit(1);
        }

        log = new PrintWriter(logFileOutputStream, true);

        for (int i = 0; i < FormatTester.THREADNUMBER; i++)
        {
            testThreadArray[i] = new TestThread();
            testThreadArray[i].start();
        }

        System.out.println("Up and running.");
    }
}

class TestThread extends Thread
{
    public void run()
    {
        for (int i = 0; i < FormatTester.ITERATIONS; i++)
        {
            Date date = new Date();

            // Here it is!
            String timeStamp = FormatTester.simpleDateFormat.format(date);

            FormatTester.log.println(timeStamp);
        }
    }
}

The output includes lines like this:
19980607-010650 (correct)
19980607-00010650 (incorrect)
1998000607-010650 (incorrect)
1998060007-00010659 (incorrect)
(Review ID: 33204)
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