June 1997
Intermediate to advanced
318 pages
8h 17m
English
Content preview from Developing Java BeansBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Using JAR Files on the CLASSPATH
My class path is configured to look in the classes.zip file provided by the JDK, followed by the root directory of the packages that I am developing. The CLASSPATH environment variable looks as follows:
CLASSPATH=c:\jdk1.1\lib\classes.zip;c:\java\projects
We can include the JAR file on the class path the same way any other path is put there. For example, if I wanted to keep all of the packages developed for this book in the BeansBook.jar file instead of keeping them in separate files, I could modify my CLASSPATH variable to look as follows:
CLASSPATH=c:\jdk1.1\lib\classes.zip;c:\java\projects\BeansBook.jar
Now the HTML file for running the PickleUser
applet can be restored to its original content by removing the
ARCHIVES tag. In this case the
PickleUser and
BeansBook.util.PickleButton classes will be loaded
from the BeansBook.jar file because it is part
of the class path.
This technique works just fine as long as the JAR file is not compressed. (You can create a JAR file without compression using the command-line option). If you want to put a compressed JAR file on the class path, it must contain all entries for every subdirectory involved. If you want a compressed JAR file to contain BeansBook/Simulator/Thermostat.class, the JAR file needs entries for the following:
BeansBook/
BeansBook/Simulator
BeansBook/Simulator/Thermostat.class
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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.