September 2019
Intermediate to advanced
816 pages
18h 47m
English
Content preview from Java Coding Problems
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Getting the classes of a package
For example, we may want to list the classes from one of the packages of the current application (for example, the modern.challenge package) or the classes from one of the packages from our compile-time libraries (for example, commons-lang-2.4.jar).
Classes are wrapped in packages that can be archived in JARs, though they don't have to be. In order to cover both cases, we need to discover whether the given package lives in a JAR or not. We can do this by loading the resource via ClassLoader.getSystemClassLoader().getResource(package_path) and checking the returned URL of the resource. If the package doesn't live in a JAR, then a resource will be a URL starting with the file: scheme, as in the following example ...
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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.