November 2002
Intermediate to advanced
464 pages
14h 34m
English
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Java 1.4 Logging API
Even if you aren’t using Java 1.4, you’ve probably heard of it and the new features that it includes. One of the new features is the logging API now included with the core library. You may be wondering what the difference is between log4j and this new library, and whether you should be using that instead.
There are several similarities between log4j and the 1.4 logging implementation. However, there are also a few major differences. Let’s look at the similarities first. Both log4j and the Java 1.4 logging implementation use a hierarchical namespace for the loggers. This allows you to configure loggers that basically align along your application’s package structure, although this is not the only way to structure the loggers.They also both support multiple levels or priorities. The 1.4 logging implementation actually contains a few more levels than log4j, though you might not ever use the extra ones because they are so fine-grained.
The differences between the two implementations are generally not big enough to cause you to miss out on important functionality. However, it does appear that log4j offers more functionality for those that really need it. More importantly, log4j works with Java Versions 1.1 and above, while the 1.4 logging implementation works only with Version 1.4. There was talk about making it backward compatible, but that hasn’t happened yet and may never happen. Also, there are currently many more appender types available for log4j than for ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.