Book Image

Learn Java 17 Programming - Second Edition

By : Nick Samoylov
4 (1)
Book Image

Learn Java 17 Programming - Second Edition

4 (1)
By: Nick Samoylov

Overview of this book

Java is one of the most preferred languages among developers. It is 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’ll then focus on understanding object-oriented programming (OOP), with exclusive insights into concepts such as 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 with the help of sample programs and practice examples. You’ll 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 and also build a sample project to help you understand the applications of these concepts. By the end of this Java book, you’ll not only have become well-versed with Java 17 but also gained a perspective into the future of this language and have the skills to code efficiently with best practices.
Table of Contents (23 chapters)
1
Part 1: Overview of Java Programming
5
Part 2: Building Blocks of Java
15
Part 3: Advanced Java

Chapter 16: Java Microbenchmark Harness

In this chapter, you will learn about a Java Microbenchmark Harness (JMH) project that allows 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.

In addition to theoretical knowledge, you 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
  • JMH usage examples

By the end of the chapter, you will be able to not only measure the average execution time of an application and other performance values (such as throughput, for example) but also to do it in a controlled manner—with or without the JVM optimizations, warm-up runs, and...