March 2019
Intermediate to advanced
242 pages
6h 21m
English
Content preview from Java 11 and 12 – New Features
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Enabling application class data archive
With Java 10, the default configuration only enabled class data sharing for JVM's bootstrap class loader. Since the bootstrap class loader doesn't load your application's files, you were expected to explicitly enable it for the application class loader and other class loaders using the following command:
-XX:+UseAppCDS
With Java 11, however, AppCDS is automatically enabled with OpenJDK 64-bit systems. When including this option, you might get an error message like this:
If you are using Java version 11 or later, you can skip this option.
Java runtime options are case sensitive. The -XX:+UseAppCDS ...
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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.