Book Image

Learn Java 12 Programming

By : Nick Samoylov
Book Image

Learn Java 12 Programming

By: Nick Samoylov

Overview of this book

Java is one of the preferred languages among developers, used in everything right from smartphones, and game consoles to even supercomputers, and its new features simply add to the richness of the language. This book on Java programming begins by helping you learn how to install the Java Development Kit. You will then focus on understanding object-oriented programming (OOP), with exclusive insights into concepts like abstraction, encapsulation, inheritance, and polymorphism, which will help you when programming for real-world apps. Next, you’ll cover fundamental programming structures of Java such as data structures and algorithms that will serve as the building blocks for your apps. You will also delve into core programming topics that will assist you with error handling, debugging, and testing your apps. As you progress, you’ll move on to advanced topics such as Java libraries, database management, and network programming, which will hone your skills in building professional-grade apps. Further on, you’ll understand how to create a graphic user interface using JavaFX and learn to build scalable apps by taking advantage of reactive and functional programming. By the end of this book, you’ll not only be well versed with Java 10, 11, and 12, but also gain a perspective into the future of this language and software development in general.
Table of Contents (25 chapters)
Free Chapter
1
Section 1: Overview of Java Programming
5
Section 2: Building Blocks of Java
15
Section 3: Advanced Java

Java Microbenchmark Harness

In this chapter, the reader will be introduced to a Java Microbenchmark Harness (JMH) project that allows for measuring various code performance characteristics. If performance is an important issue for your application, this tool can help you to identify bottlenecks with precision—up to the method level. Using it, the reader will be able to not only measure the average execution time of the code and other performance values (such as throughput, for example) but to do it in a controlled manner—with or without the JVM optimizations, warmup runs, and so on.

In addition to theoretical knowledge, the reader will have a chance to run JMH using practical demo examples and recommendations.

The following topics will be covered in this chapter:

  • What is JMH?
  • Creating a JMH benchmark
  • Running the benchmark
  • Using the IDE plugin
  • JMH benchmark parameters...