Improve application performance by tuning, monitoring and profiling both the garbage collector and JVM Key Features Understand the different parts of Java memory and the various garbage collectors so you can select your preferred one Explore how memory management can help to effectively improve performance Learn how to spot and avoid memory leaks to enhance application performance Book DescriptionUnderstanding how Java organizes memory is important for every Java professional, but this particular topic is a common knowledge gap for many software professionals. Having in-depth knowledge of memory functioning and management is incredibly useful in writing and analyzing code, as well as debugging memory problems. In fact, it can be just the knowledge you need to level up your skills and career. In this book, you'll start by working through the basics of Java memory. After that, you'll dive into the different segments individually. You'll explore the stack, the heap, and the Metaspace. Next, you'll be ready to delve into JVM standard garbage collectors. The book will also show you how to tune, monitor and profile JVM memory management. Later chapters will guide you on how to avoid and spot memory leaks. By the end of this book, you'll have understood how Java manages memory and how to customize it for the benefit of your applications. What you will learn Understand the schematics of debugging and how to design the application to perform well Discover how garbage collectors work Distinguish between various garbage collector implementations Identify the metrics required for analyzing application performance Configure and monitor JVM memory management Identify and solve memory leaks Who this book is forThis book is for all levels of Java professionals, regardless of whether you're a junior or senior developer, a DevOps engineer, a tester, or the system admin of a Java application. If you currently don't have in-depth knowledge of Java memory, garbage collection, and/or JVM tuning, then this book will help you to take your Java skills to the next level.

Start your journey towards becoming a JavaScript developer with the help of more than 100 fun exercises and projects. Purchase of the print or Kindle book includes a free eBook in the PDF format. Key Features Write eloquent JavaScript and employ fundamental and advanced features to create your own web apps Interact with the browser with HTML and JavaScript, and add dynamic images, shapes, and text with HTML5 Canvas Build a password checker, paint web app, hangman game, and many more fun projects Book DescriptionThis book demonstrates the capabilities of JavaScript for web application development by combining theoretical learning with code exercises and fun projects that you can challenge yourself with. The guiding principle of the book is to show how straightforward JavaScript techniques can be used to make web apps ranging from dynamic websites to simple browser-based games. JavaScript from Beginner to Professional focuses on key programming concepts and Document Object Model manipulations that are used to solve common problems in professional web applications. These include data validation, manipulating the appearance of web pages, working with asynchronous and concurrent code. The book uses project-based learning to provide context for the theoretical components in a series of code examples that can be used as modules of an application, such as input validators, games, and simple animations. This will be supplemented with a brief crash course on HTML and CSS to illustrate how JavaScript components fit into a complete web application. As you learn the concepts, you can try them in your own editor or browser console to get a solid understanding of how they work and what they do. By the end of this JavaScript book, you will feel confident writing core JavaScript code and be equipped to progress to more advanced libraries, frameworks, and environments such as React, Angular, and Node.js. What you will learn Use logic statements to make decisions within your code Save time with JavaScript loops by avoiding writing the same code repeatedly Use JavaScript functions and methods to selectively execute code Connect to HTML5 elements and bring your own web pages to life with interactive content Make your search patterns more effective with regular expressions Explore concurrency and asynchronous programming to process events efficiently and improve performance Get a head start on your next steps with primers on key libraries, frameworks, and APIs Who this book is forThis book is for people who are new to JavaScript (JS) or those looking to build up their skills in web development. Basic familiarity with HTML & CSS would be beneficial. Whether you are a junior or intermediate developer who needs an easy-to-understand practical guide for JS concepts, a developer who wants to transition into working with JS, or a student studying programming concepts using JS, this book will prove helpful.