Subclassing java.util.logging.LogManager

i am trying to subclass the LogManager class and have tried adding the following System property as mentioned in the Java API :-
java.util.logging.manager = CustomLogger
where,
CustomLogger is the name of my subclass of LogManager.
Still, when I ran the program, the instance of the global log manager (java.util.logging.LogManager) is only created. It's not creating the instance of "CustomLogger".
I have tried to give the full package name of the subclass as follows, still it is creating the instance of java.util.logging.LogManager only:-
java.util.logging.manager = com.test.logging.CustomLogger
Any pointers to resolve this issue will be of great help..
~Thanks
Dev

devdas_kushe wrote:
I checked the LoggingPermission stuff, but could not figure out how it works..And did you check the IllegalAccessException stuff too? Like the documentation, which says:
An IllegalAccessException is thrown when an application tries to reflectively create an instance (other than an array), set or get a field, or invoke a method, but the currently executing method does not have access to the definition of the specified class, field, method or constructor.My guess is your class has a private constructor. This could happen if somebody had the bright idea of applying the Singleton pattern to it. If that's the case, drop the Singleton idea in favour of the Just Create One Of Them idea.
And I second what the others said about (a) preferring Log4J and (b) you probably not needing a custom LogManager.

Similar Messages

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This should be so easy, what am I doing wrong?
I have the following logging.properties located on my classpath:
handlers=java.util.logging.ConsoleHandler
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java.util.logging.ConsoleHandler.level=INFO
java.util.logging.ConsoleHandler.formatter=java.util.logging.SimpleFormatter
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global
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It seems a logger instance HAS been created for my Test class, I've added the lines below. Though it didn't appear in the logger names enumeration.
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System.out.println(logger.getName()+"="+logger.getLevel().getName());
logger.severe("severe");
logger.warning("warning");
logger.info("info");
logger.config("config");
logger.fine("fine");
logger.finer("finer");
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6/10/2003 16:00:01 Test <init>
SEVERE: severe
6/10/2003 16:00:01 Test <init>
WARNING: warning
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Thanks!

Hi,
Did you ever figure this out?
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Enabling java.util.logging for Toplink

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TIA,
Clark

Hi Clark,
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Doubt in java.util.logging

Hi,
I have doubt in logging api provided in java 1.4.
I have a simple program to get the logger and output log into it.
This is how the program looks.
LogTest.java
import java.util.logging.*;
import java.util.*;
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=================
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java.util.logging.ConsoleHandler.level=INFO
java.util.logging.ConsoleHandler.formatter = java.util.logging.SimpleFormatter
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=================
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null
null
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Thanks,
Siva

Well, basically that's part of the formatdefinition
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aren't really using Properties format and you'llhave
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Hi,
I'm developping a new Handler (extending the java.util.logging.StreamHandler) and I need to get some initialisation properties from the LogManager. I was taking example from the existing Handlers (SocketHandler, FileHandler...) and wanted to use the LogManager.getLevelProperty, getFilterProperty and so on). Unfortunately these methods are not public.
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Java.util.logging: write to one log file from many application (classes)

I have a menuapp to launch many applications, all running in same JVM and i want to add logging information to them, using java.util.logging.
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Getting no output from java.util.logging.FileHandler

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Do not use default logger as getLoggers[0] , but use your java.util.Logger.FileHandler and add filehandler object to log your fButtonActions and you do not need to mess with logger.properties too.

How is java.util.logging used to log to unix syslog?

I'm trying to log out to syslog using the java.util.logging that is now in 1.4. I've read all I can find on this topic (not much) and have solicited the used of some syslog free ware (protomatter) but still can't get this to work. I feel like I'm missing something simple here, any help would be appreciated....
Here is my latest attempt:
import java.util.logging.*;
import java.util.*;
import java.io.*;
import com.protomatter.syslog.SyslogHandler;
public class SyslogTest
public static void main(String argv[]){
Logger logger2 = Logger.getLogger("local3");
SyslogHandler ch = new SyslogHandler();
ch.setLevel(Level.WARNING);
logger2.addHandler(ch);
logger2.warning("this is a log message");
if (logger2.isLoggable(Level.WARNING)) {
System.out.println("Is LOGGABLE");
else {
System.out.println("Is not loggable");
When this is run nothing is printed to any of the local3 facilities. I've verified that syslog is running fine from the command line using unix logger, so the problem seems to be isolated to my java.
Thanks.

Hi,
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Cheers,
Craig.

SLF4J instead of Java Util Logging?

Hi BDBJE team,
Is it included on the BDBJE roadmap a migration from "Java Util Logging" to a most flexible framework like SLF4J?
BR,
/César.

Hi Cesar,
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--mark

How to prevent java.util.logging from displaying pop-up dialog on SEVERE?

Hi,
I'm new to using java.util.logging. I notice that whenever I try to make a call to logger.SEVERE(msg) or logger.WARNING(msg), not only does it write the output to file (which I want), but it also pops up a dialog box displaying the exception. I don't want this pop up to appear. How do I prevent the logger from doing this?

What are you talking about?
Hello,
In order to better assist you with your issue please provide us with a screenshot. If you need help to create a screenshot, please see [[How do I create a screenshot of my problem?]]
Once you've done this, attach the saved screenshot file to your forum post by clicking the '''Browse...''' button below the ''Post your reply'' box. This will help us to visualize the problem.
Thank you!

Java.util.logging - Problem with setting different Levels for each Handler

Hello all,
I am having issues setting up the java.util.logging system to use multiple handlers.
I will paste the relevant code below, but basically I have 3 Handlers. One is a custom handler that opens a JOptionPane dialog with the specified error, the others are ConsoleHandler and FileHandler. I want Console and File to display ALL levels, and I want the custom handler to only display SEVERE levels.
As it is now, all log levels are being displayed in the JOptionPane, and the Console is displaying duplicates.
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logger = Logger.getLogger("lib.srr.applet");
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ch.setLevel(Level.FINER);
// Log SEVERE levels to the User, through a JOptionPane message dialog
SRRUserAlertHandler uah = new SRRUserAlertHandler();
uah.setLevel(Level.SEVERE);
uah.setFormatter(new SRRUserAlertFormatter());
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The getLevel calls displays the proper levels: "FINER -- FINER -- SEVERE"
When I start up the applet, I get the following in the console:
Apr 28, 2009 12:01:34 PM lib.srr.applet.SRR initLogger
INFO: FINER -- FINER -- SEVERE
Apr 28, 2009 12:01:34 PM lib.srr.applet.SRR initLogger
INFO: FINER -- FINER -- SEVERE
Apr 28, 2009 12:01:40 PM lib.srr.applet.SRR initLogger
INFO: Logger Initialized.
Apr 28, 2009 12:01:40 PM lib.srr.applet.SRR initLogger
INFO: Logger Initialized.
Apr 28, 2009 12:01:41 PM lib.srr.applet.SRR init
INFO: Preparing Helper Files.
Apr 28, 2009 12:01:41 PM lib.srr.applet.SRR init
INFO: Preparing Helper Files.
Apr 28, 2009 12:01:42 PM lib.srr.applet.SRR init
INFO: Getting PC Name.
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Apr 28, 2009 12:01:42 PM lib.srr.applet.SRR init
INFO: Finished Initialization.Notice they all display twice. Each of those are also being displayed to the user through the JOptionPane dialogs.
Any ideas how I can properly set this up to send ONLY SEVERE to the user, and FINER and up to the File/Console?
Thanks!
Edit:
Just in case, here is the code for my SRRUserAlertHandler:
public class SRRUserAlertHandler extends Handler {
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}Edited by: compbry15 on Apr 28, 2009 9:44 AM

For now I have fixed the issue of setLevel not working by making a Filter class:
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}My new SRRUserAlertHandler goes like this now:
public class SRRUserAlertHandler extends Handler {
     public void close() throws SecurityException {
     public void flush() {
     public void publish(LogRecord arg0) {
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          if (theFilter.isLoggable(arg0))
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}This is ugly as sin .. but I cannot be required to change an external config file when this is going in an applet.
After much searching around, this logging api is quite annoying at times. I have seen numerous other people run into problems with it not logging specific levels, or logging too many levels, etc. A developer should be able to complete configure the system without having to modify external config files.
Does anyone else have another solution?

Java.util.logging.XMLFormatter - need advise

Hi all,
I have this class which suppose to write some message into the custom log file (in XML). Problem is, after the first time of writing it into the same file, it will append additional XML header :
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE log SYSTEM "logger.dtd">
Worse, it will always append below.
For example, the original XML file contains:
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE log SYSTEM "logger.dtd">
<log>
<record>
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<millis>1287569913671</millis>
<sequence>0</sequence>
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<message>message inside thia standard data</message>
</record>
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE log SYSTEM "logger.dtd">
<log>
<record>
<date>2010-10-20T18:18:33</date>
<millis>1287569913671</millis>
<sequence>0</sequence>
<logger>atm.controller.Log_Controller</logger>
<level>INFO</level>
<class>atm.controller.Log_Controller</class>
<method>writeInfoLog</method>
<thread>10</thread>
<message>message inside thia standard data</message>
</record>
</log>
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE log SYSTEM "logger.dtd">
<log>
<record>
<date>2010-10-20T18:21:25</date>
<millis>1287570085050</millis>
<sequence>0</sequence>
<logger>atm.controller.Log_Controller</logger>
<level>INFO</level>
<class>atm.controller.Log_Controller</class>
<method>writeInfoLog</method>
<thread>10</thread>
<message>message inside thia standard data</message>
</record>
</log>--------------------------------------------------
Below is the code.
import java.io.IOException;
import java.util.logging.FileHandler;
import java.util.logging.Logger;
import java.util.logging.XMLFormatter;
public class Log_Controller
    private static Logger logger = Logger.getLogger( Log_Controller.class.getName() );
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    public Log_Controller()
        try
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            FileHandler fileTxt = new FileHandler( "test.xml", allowAppend );
            fileTxt.setFormatter( formatterTxt );
            logger.addHandler( fileTxt );
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            ioe.printStackTrace();
    public void writeInfoLog( String message )
        logger.info("message inside thia standard data"); //THIS IS THE PART WHERE IT WRITE SOME MESSAGE INTO THE FILE
//        logger.info( message );
}This is something new to me, appreciate if someone can point me what the mistake that I have done.
Thanks thanks.
Edited by: 803699 on 20-Oct-2010 04:15
Edited by: 803699 on 20-Oct-2010 08:45

you cannot append to an xml file using the standard formatter because it makes the log file a "complete xml document" (header and root wrapper tags). if you want to be able to append to an existing xml log file, you will need to roll your own formatter.

Subclassing java.util.logging.LogManager

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