FULL PRODUCT VERSION :
java version "1.4.2_07"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_07-b05)
Java HotSpot(TM) Client VM (build 1.4.2_07-b05, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [Version 5.1.2600]

A DESCRIPTION OF THE PROBLEM :
This is copy and pasted from Bug ID 4775533.
Although it would be nice to migrate to J2SE 5.0, that is not an option at this time.

A DESCRIPTION OF THE PROBLEM :
Once this Java program is finished running, there is a
lockfile called "LogDemo.txt.lck" lying around, that wasn't
there before, created (but not deleted) by the FileHandler
object.



REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
// Filename: LogDemo.java

import java.io.*;
import java.util.logging.*;

public final class LogDemo
{
    public static void main(String[] args)
    {
        Logger logger = null; // A logger
        FileHandler fh = null; // The logger output will go here

        try
        {
            logger = Logger.getLogger("LogDemo");
            logger.setUseParentHandlers(false); // Disable console output

            fh = new FileHandler("LogDemo.txt");
            logger.addHandler(fh);

            logger.setLevel(Level.ALL);
            logger.info("Hey hey hey!");
            throwSomething();
        }
        catch (Throwable e)
        {
            String errmsg = "AN EXCEPTION WAS THROWN:\n" + getStackTrace(e);
            //System.err.println(errmsg);
            if (logger != null)
                logger.severe(errmsg);
            return;
        }
        finally
        {
            /*
            ** Does any of the code in this block need to be here?
            */
            if (fh != null)
                fh.close();
            logger.removeHandler(fh);
        }
    }

    /*
    ** Return a stack trace of the given exception, in a String:
    */
    private static final String getStackTrace(Throwable e)
    {
        StringWriter s = new StringWriter();
        e.printStackTrace(new PrintWriter(s));
        return s.toString();
    }

    /*
    ** Throw an exception on purpose:
    */
    private static void throwSomething() throws AssertionError
    {
        throw new AssertionError("Ha, ha! You're history, dude!");
    }
}

---------- END SOURCE ----------

CUSTOMER WORKAROUND :
Delete the lock file manually, or just learn to live with
it.
(Review ID: 158666)
======================================================================

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. java LogDemo

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The FileHandler instance should clean up after itself. In
 xxxxx words, it should make sure that the "LogDemo.txt.lck"
file gets deleted, upon exit.
ACTUAL -
The .lck files are not deleted. (And .1, .2 files remain, as well, when concurrent access happens.)

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
// Filename: LogDemo.java

import java.io.*;
import java.util.logging.*;

public final class LogDemo
{
    public static void main(String[] args)
    {
        Logger logger = null; // A logger
        FileHandler fh = null; // The logger output will go here

        try
        {
            logger = Logger.getLogger("LogDemo");
            logger.setUseParentHandlers(false); // Disable console output

            fh = new FileHandler("LogDemo.txt");
            logger.addHandler(fh);

            logger.setLevel(Level.ALL);
            logger.info("Hey hey hey!");
            throwSomething();
        }
        catch (Throwable e)
        {
            String errmsg = "AN EXCEPTION WAS THROWN:\n" + getStackTrace(e);
            //System.err.println(errmsg);
            if (logger != null)
                logger.severe(errmsg);
            return;
        }
        finally
        {
            /*
            ** Does any of the code in this block need to be here?
            */
            if (fh != null)
                fh.close();
            logger.removeHandler(fh);
        }
    }

    /*
    ** Return a stack trace of the given exception, in a String:
    */
    private static final String getStackTrace(Throwable e)
    {
        StringWriter s = new StringWriter();
        e.printStackTrace(new PrintWriter(s));
        return s.toString();
    }

    /*
    ** Throw an exception on purpose:
    */
    private static void throwSomething() throws AssertionError
    {
        throw new AssertionError("Ha, ha! You're history, dude!");
    }
}

---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Delete the lock file manually, or just learn to live with
it.

In my particular situation, we need one file, and we're getting 2n files, where n is the number of concurrent sessions that have ever happened, on both sides of our hallway...
###@###.### 2005-05-25 08:29:48 GMT