Cancelling Timer and TimerTask threads

I'm running Java SE 1.5 under UNIX System Services, which is IBM's UNIX on z/OS. I have 3 files. One that starts a thread. The thread then schedules another thread to run on a particular interval. The threads runs, however the main thread does not end.

//Test code
import java.util.*;
import java.lang.Thread.*;
public class TestEveProc
{
public static void main(String argsݨ)
{
System.out.println("+-----------------------------------------+");
System.out.println("Starting Thread1");
Thread1 proc = new Thread1();
proc.start();
try
{
Thread.sleep(60000);
}
catch (InterruptedException ex)
{
System.out.println("Unexpected interruption exception!");
}
System.out.println("Stopping Thread1");
proc.interrupt();
System.out.println("Stopped Thread1");
}
}

/**
* Thread1.java
*
*/
import org.apache.log4j.Logger;
import java.util.Timer;
import java.util.TimerTask;

public class Thread1 extends Thread
{
static Logger logger = Logger.getLogger("Thread1");
private TimerTask thread2;
private TimerTask thread3;
private TimerTask thread4;

public Thread1()
{
logger.debug("Entered Thread1 constructor.");

logger.debug("Exited Thread1 constructor.");
}
/**
* Start the threads.
*/
public void run()
{
logger.debug("Entered run method.");

thread2 = new Thread2();
thread3 = new Thread2();
thread4 = new Thread2();
Timer timer = new Timer(true);
timer.scheduleAtFixedRate(thread2, 5000, 10000);
timer.scheduleAtFixedRate(thread3, 5000, 10000);
timer.scheduleAtFixedRate(thread4, 5000, 10000);

while (true)
{
try
{
Thread.sleep(5000);
}
catch (InterruptedException nex)
{
boolean bFlg = thread2.cancel();
System.out.println("Result of thread2 cancel = " + bFlg);
bFlg = thread3.cancel();
System.out.println("Result of thread3 cancel = " + bFlg);
bFlg = thread4.cancel();
System.out.println("Result of thread4 cancel = " + bFlg);

timer.cancel();
System.out.println("Exited run method.");
logger.debug("Exited run method.");
}
}
}

} // end class Thread1

/**
* Thread2.java
*
*/
import org.apache.log4j.Logger;
import java.text.DateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.TimerTask;

public class Thread2 extends TimerTask
{
static Logger logger = Logger.getLogger("Thread2");

/**
* Initial setup
*/
public Thread2()
{
logger.debug("Entered Thread2 constructor.");

logger.debug("Exited Thread2 constructor.");
}
/**
* Add special event ID to event ID queue.
*/
public void run()
{
logger.debug("Entered Thread2 run method.");

try
{
DateFormat dateFormat = DateFormat.getDateTimeInstance(
DateFormat.LONG, DateFormat.LONG);
String date = dateFormat.format(new Date(Calendar.getInstance().getTimeInMillis()));
System.out.println("Entered run method at time: " + date);
Thread.sleep(2000);
}
catch (InterruptedException ex) {;}

logger.debug("Exited Thread2 run method.");
}

} // end class Thread2

+-----------------------------------------+
Starting Thread1
Entered run method at time: April 29, 2009 3:39:04 PM EDT
Entered run method at time: April 29, 2009 3:39:06 PM EDT
Entered run method at time: April 29, 2009 3:39:08 PM EDT
Entered run method at time: April 29, 2009 3:39:14 PM EDT
Entered run method at time: April 29, 2009 3:39:16 PM EDT
Entered run method at time: April 29, 2009 3:39:18 PM EDT
Entered run method at time: April 29, 2009 3:39:24 PM EDT
Entered run method at time: April 29, 2009 3:39:26 PM EDT
Entered run method at time: April 29, 2009 3:39:28 PM EDT
Entered run method at time: April 29, 2009 3:39:34 PM EDT
Entered run method at time: April 29, 2009 3:39:36 PM EDT
Entered run method at time: April 29, 2009 3:39:38 PM EDT
Entered run method at time: April 29, 2009 3:39:44 PM EDT
Entered run method at time: April 29, 2009 3:39:46 PM EDT
Entered run method at time: April 29, 2009 3:39:48 PM EDT
Entered run method at time: April 29, 2009 3:39:54 PM EDT
Entered run method at time: April 29, 2009 3:39:56 PM EDT
Entered run method at time: April 29, 2009 3:39:58 PM EDT
Stopping Thread1
Stopped Thread1
Result of thread2 cancel = true
Result of thread3 cancel = true
Result of thread4 cancel = true
Exited run method.

Walter

wfalby

[wfalby]

This problem has been resolved. You can put it down to not seeing the obvious.

Walter

wfalby