Applet + Java Logging

Currently i'm using java logging on java applet.
i try to change the formatter using my custom made formatter
so the configuration will become :
java.util.logging.FileHandler.level = INFO
java.util.logging.FileHandler.formatter = com.xyz.logging.CustomFormatter
but seems the applet always load the default formatter.
I'll already try using the application (JFrame) and it work fine.
And also if i change 'handlers' to my own handler it will throw me classnotfoundexception
Help....
Message was edited by:
Isyak

With an applet you can't control the command line properties, so you are probably picking up the default logging.properties from the client's JVM installation.
You can't write to a file, of course, unless your applet is signed.

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What is better Java Logging or Log4J and why?

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We have a requirement to log application errors in a local log file in the form of key/value pairs (from a property object) after every transaction, append to the previous transaction and generate one log file for each day.
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message=xxxxx
userId=xxxx
etc.
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Error running applet, java.lang.UnsatisfiedLinkError: enableModeless

hi guys
I write an applet with JDevloper 3.1 using Oracle's B4J to connect to oracle 8.1.5. In Jdev all works fine. After deploying with the wizard to a webserver und running the applet using JRE 1.2.2 i got the following exception:
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at sun.beans.ole.ModalityListenerImpl.modalityPushed(Unknown Source)
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at sun.awt.windows.ModalityEvent.dispatch(Unkown Source)
at sun.awt.windows.WToolkit.notifyModalityChange(Unkown Source)
at sun.awt.windows.WDialogPeer.show(Unkown Source)
at sun.awt.Dialog.conditionalShow(Unkown Source)
at sun.awt.Dialog.show(Unkown Source)
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Armin

Armin,
I haven't seen this one before.
Is your browser set to run with German locale?
Here is my standard reply for problems with applet deployment in 3.1. It is probably the case that some classes available in the JDeveloper environment were not deployed to your web server environment.
Applet Deployment for JDev 3.1
Deployment issues for client and server:
1. Make sure you have the JDK 1.2 plugin installed on the client.
2. If your webserver and database are not on the same machine, you will have to configure your applet
differently, or install the Net8 Connection Manager. See the Oracle JDBC Developer's Guide for more
information (exact location of applet info depends on which version of the DB).
Creating your Applet within JDeveloper:
1. Create a new workspace.
2. Create a new Business Components project. You will define your data model and business logic in this
project. This is effectively your middle tier, but can be deployed to any tier you choose. In this
project you will use the Business Components wizard to create:
a. entity objects for each of the tables/views you want to develop against
b. view objects (and optionally view links, associations) for each of the entity objects or
combination of entity objects
c. application module(s) to represent your data model(s)
3. Save and build your business components project.
4. Create a new empty project to contain your applet code.
5. Launch the Infobus DataForm wizard to create your DAC applet. Choose the app module you created in
step 2 as a data source. (Alternately, you can create the applet from scratch using the controls and
binding your sessioninfo object to your app module).
Deployment Steps within JDeveloper:
1. Deploy your business components project.
a. decide how you will deploy your app module (local, visibroker, etc.)
b. if you decide to deploy in local mode, use the Deployment Profile Wizard and choose 'Simple
Archive', including all of the business components project's XML and .JAVA files in the archive.
c. if you will deploy to visibroker, see the online help for deploying your business components,
and see the Release Notes for additional changes you need to make to your applet project.
2. (if deploying BC4J project in local mode) Create a library using the archive you generated in Step
1. Add this library to your applet project from the Project Properties Libraries tab.
3. Clear out a directory on your local machine where the deployment wizard can copy everything you
need to deploy.
4. Deploy your applet project.
a. Run the JDeveloper Deployment Profile Wizard and choose the Web Application to Web Server option
on Page 1.
b. On page 2, select all of the .class files in your project that make up the applet.
c. Select all the libraries listed and shuttle them to the selected list. The contents of these
libraries will automatically be added to your applet's HTML file during deployment
d. Give the .jar file a name, and run the deployment to generate that jar file.
e. select the location of the 'clean' directory you created in step 3.
Deploying to your WebServer:
1. Copy everything that the deployment process placed in your 'clean' directory to your WebServer.
If you deployed your BC4J project locally, you will need to deploy the archive file containing your
business components to the webserver along with all of the other archives.
2. If you want to put the dependency archives in a different location from the applet's HTML file
under the webserver root, then you need to set the CODEBASE tag in the HTML file to the (relative)
location of the archives.
Troubleshooting:
1. Try both Netscape and IE. Different Browsers sometimes give different errors and one might be more
helpful/indicative of the problem's source.
2. Use the Java Console to get a more detailed stack trace. For Netscape, choose
Communicator->Tools->Java Console.
References w/in Oracle -
JDBC Developer's Guide
Net8 Admin Guide
Referenc es outside Oracle -
Borland JBuilder doc: http://www.borland.com/techpubs/jbuilder/jbuilder3-s/pg/applets.html
JavaSoft Plugin Download: http://java.sun.com/products/plugin/
JavaSoft Applets Resources Page: http://www.javasoft.com/applets/index.html
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Java logging API (1.4) -- where's the file?

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I am doing some very simple code:
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also, why aren't the specs for the config file listed anywhere, all these %t, %u, etc.....????

The FileHandler API gives the meaning for the % symbols.
http://java.sun.com/j2se/1.4/docs/api/java/util/logging/FileHandler.html
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Hi,
You should check out log4j. It's pretty easy to use, and has been the favorite logging tool for pretty much everyone I've worked with for the last few years. It's free, just google it.
You won't have to change your java code, it plugs into the standard Java logging facility automatically.
You just put log4j.jar and log4j.xml into your applib directory. Here is an example of a log4j.xml file that logs both to the console and to the file /logs/my.log. It assumes your code is in 'com.mypackage.' You can have as many logger elements as you want, and have different packages or classes set to different logging levels.
<pre>
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
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          </layout>
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          <appender-ref ref="file" />
     </root>
</log4j:configuration>
</pre>
Hope that helps,
Mike from Ottawa

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Hello,
I am looking for a dynamic way to set a property in a java logging properties file.
For example something like this:
java.util.logging.FileHandler.pattern = ${log.dir}/logfile%u.log
..where log.dir is a system property. But this does not work. Any other way to do it?
Thanks in advance,
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This pattern doesn't work ? here is the content of my
logging.properties file.
java.util.logging.FileHandler.pattern = LOGFILE.log
java.util.logging.FileHandler.limit = 50000
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java.util.logging.FileHandler
SECOND_LOGGER.level = ALLIt seems like you're not thoroughly reading the spec on this stuff.
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I've never done this before, but here's what I came up with after reading the spec:
1) define 1 subclass of FileHandler for each file you want to write to... let's call them FileHandlerA and FileHandlerB. All they have to do is extend FileHandler, nothing else.
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mypackage.myhandlers.FileHandlerA.pattern = LogFile-A.log
mypackage.myhandlers.FileHandlerB.pattern = LogFile-B.log
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FIRST_LOGGER.handlers = mypackage.myhandlers.FileHandlerA
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Cant create java log

hello to all members. I have a problem installing my java into my new server
"/etc/init.d/ipw_jvms: /log/ipw_jvms.log: cannot create" <----how am i suppose to created the log file?? I thought java log will be auto created when installing java
http://sunsolve.sun.com/pub-cgi/show.pl?target=patches/J2SE <--- i need to install this package of java
how can i get this version of java
pls help me on this
thanks
regards
msyafiq
Edited by: msyafiq on Aug 10, 2008 7:16 PM

hello to all members. I have a problem installing my java into my new server
"/etc/init.d/ipw_jvms: /log/ipw_jvms.log: cannot create" <----how am i suppose to created the log file?? I thought java log will be auto created when installing java
http://sunsolve.sun.com/pub-cgi/show.pl?target=patches/J2SE <--- i need to install this package of java
how can i get this version of java
pls help me on this
thanks
regards
msyafiq
Edited by: msyafiq on Aug 10, 2008 7:16 PM

Java Log

Hello Everyone,
I found this example at this link: http://www.idevelopment.info/data/Programming/java/logging/LoggingDemo2.java
import java.util.logging.*;
import java.io.*;
* Simple demo that uses the Java SDK 1.4 Logging API
* @version 1.0
* @author Jeffrey M. Hunter ([email protected])
* @author http://www.idevelopment.info
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Use this constructor:
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Program or applet java ?

I want to create an application which is portable
But I hesitate between a program and an applet java
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http://forum.java.sun.com/thread.jsp?forum=31&thread=308471

Applet + Java Logging

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