Simple logging under Java 1.3.1?

Question

Hi,
I am not able to use Java 1.4 at the moment and so cannot take advantage of
its new logging classes, can anyone point me in the direction of any
tutorials on doing basic transaction logging with 1.3? Is it just a case of
calling a function that opens a file and appends a line to the end of it
every time I want to log something or is there more to it than that?
Richard

Answer 1

there is something critical that you must use 1.4 final release from sun because it contains some modifications of the logging APIs, i found that a book uses an old 1.4 beta 1 logging APIs which changed in 1.4 beta 3 and 1.4.0 final release, and also i found this probelm in one of sun's offecial publications
here is my email : Simon Ritter - Sun UK, i asked him for an explanation
so, you will see the old version of Logging APIs and the NEW one after it, understand this code and use java 1.4.0 docs to learn more, and take care of old version of the new java logging APIs
Date: Mon, 4 Feb 2002 12:14:45 +0000 (GMT)
From: "Simon Ritter - Sun UK" <[email protected]> | Block Address | Add to Address Book
Reply-to: Simon Ritter - Sun UK <[email protected]>
Subject: Re: is Bug or New
To: [email protected]
Mohammad,
thanks for the feedback on the sample code/presentation. I've just
checked the
latest JDK1.4 which is the release candidate made available in the last
couple
of weeks. You are right, they have changed the API for LogManager.
This is the
problem with working at the leading edge and dealing with Beta code. I
will
change my presentation and sample code to reflect the new API
definition.
Regards,
Simon.
Date: Mon, 4 Feb 2002 04:04:04 -0800 (PST)
From: Mohammad Nabil <[email protected]>
Subject: is Bug or New
To: [email protected]
Dear sir,
i downloaded:
Java � 2 Standard Edition
A Tutorial Of New
Features in J2SE v1.4.
on 23.01.2002.
and i have some comments on the Logging APIs.
and also, I hope you tell me some sites from where i
can know more about those new features of J2SDK 1.4.
best regards,
mohammad nabil
Note:
i'm sure you are busy but here is my comments if
you want:
generaly i downloaded a sample chapter of somebook
that uses the following methods in LogManager
void addGlobalHandler(Handler handler)
void removeAllGlobalHandlers()
void removeGlobalHandler(Handler handler)
void setLevel(String namespace, Level level)
which are not exist at all in the
"java.util.logging.LogManager"
also this situation is reported in the Java � 2
Standard Edition A Tutorial Of New Features in J2SE
v1.4 page 7 & 8 of 42
the Tutorial code is:
     import java. util. logging.*;
     try {
          Handler logHandler = new FileHandler(" example.
log");
     } catch (IOException ioe) {
          // Handle exception
     LogManager lm = LogManager. getLogManager();
     lm. addGlobalHandler( logHandler);
     lm. setLevel(" loggerExample", Level. FINEST);
     Logger logger = Logger. getLogger(" loggerExample");
     logger. fine(" User " + loginId + "logged in");
     logger. log( Level. WARNING, "Bad password entered 3
times");
my suggested, which is compiled and working properly,
my code is:
     import java.util.logging.*;
     import java.io.*;
     Handler logHandler = null;
     try {
     logHandler = new FileHandler("d:\\example.log");
//OR     logHandler = new
FileHandler("d:\\example.xml");
//OR     logHandler = new ConsoleHandler();
//OR     logHandler = new SocketHandler(String host,
int port)
     } catch (IOException ioe) {
     // Handle exception
     System.exit(0);
     LogManager lm = LogManager.getLogManager();
     Logger logger = Logger.getLogger("loggerExample");
logger.addHandler(logHandler);
lm.addLogger(logger);
logger.fine(" User " + "loginId" + "logged
in");
logger.log( Level. WARNING, "Bad password
entered 3 times");
     //Now logger is registered in LogManager and we can
get it.
     Logger newLogger = lm.getLogger("loggerExample");
     newLogger.setLevel(Level.WARNING);
// this second logger.fine will not appear in
the file;
logger.fine(" User " + "loginId" + "logged in
again");
newLogger.log( Level. WARNING, "Bad password
entered 3 times again??!!");
>
i hope you tell me if that java tutorial is too new so
i can't find the code in my J2SDK version 1.4
candidate Release "Released from about 2 weeks only",
or that version 1.4 i have is newer than the one used
by tutorial.
thanks.
hope this help