Book Image

Mastering Java 11 - Second Edition

By : Dr. Edward Lavieri, Mandar Jog
Book Image

Mastering Java 11 - Second Edition

By: Dr. Edward Lavieri, Mandar Jog

Overview of this book

Java 11 is a long-term release and its new features add to the richness of the language. It emphasizes variable-type inference, performance improvements, along with simplified multithreading. The Java platform has a special emphasis on modularity, making this the programming platform of choice for millions of developers. The modern Java platform can be used to build robust software applications, including enterprise-level and mobile applications. Fully updated for Java 11, this book stands to help any Java developer enjoy the richness of the Java programming language. Mastering Java 11 is your one-stop guide to fully understanding recent Java platform updates. It contains detailed explanations of the recent features introduced in Java 9, Java 10, and Java 11 along with obtaining practical guidance on how to apply the new features. As you make your way through the chapters, you'll discover further information on the developments of the Java platform and learn about the changes introduced by the variable handles and Project Coin, along with several enhancements in relation to import statements processing. In the concluding chapters, you'll learn to improve your development productivity, making your applications more efficient. You'll also be able to get to grips with the command-line flags with respect to various utilities and the command-line utility changes featured in the current Java platform. By the end of the book, you'll have obtained an advanced level understanding of the Java platform and its recent changes.
Table of Contents (20 chapters)

Compiler control

Controlling Java Virtual Machine (JVM) compilers might seem like an unnecessary task, but for many developers, this is an important aspect of testing. This is accomplished with method-dependent compiler flags.

In this section, we will start with a look at JVM compilation modes and then look at the compiler that can be controlled using the Java platform.

Compilation modes

The changes in the modern Java platform include granular control of both the C1 and C2 JVM compilers. As you can see in the following illustration, the Java HotSpot JVM has two JIT compilation modes C1 and C2:

Java hotSpot JVM compilation modes

The C1 and C2 compilation modes use different compilation techniques and, if used on the same code...