September 2018
Intermediate to advanced
802 pages
19h 30m
English
Content preview from Java 11 Cookbook - Second Edition
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Compiling for older platform versions
We have, at some point, used the -source and -target options to create a java build. The -source option is used to indicate the version of Java language accepted by the compiler, and the -target option is used to indicate the version supported by the class files. Often, we forget to use the -source option and by default, javac compiles against the latest available Java version. Due to this, there are chances of newer APIs being used and as a result, the build doesn't run as expected on the target version.
To overcome the confusion of providing two different command-line options, a new command-line option, --release, was introduced in Java 9. This acts as a substitute to the -source, -target and -bootclasspath ...
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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.