Book Image

Learn Java with Projects

By : Dr. Seán Kennedy, Maaike van Putten
5 (3)
Book Image

Learn Java with Projects

5 (3)
By: Dr. Seán Kennedy, Maaike van Putten

Overview of this book

Learn Java with Projects stands out in the world of Java guides; while some books skim the surface and others get lost in too much detail, this one finds a nice middle ground. You’ll begin by exploring the fundamentals of Java, from its primitive data types through to loops and arrays. Next, you’ll move on to object-oriented programming (OOP), where you’ll get to grips with key topics such as classes, objects, encapsulation, inheritance, polymorphism, interfaces, and more. The chapters are designed in a way that focuses on topics that really matter in real-life work situations. No extra fluff here, so that you get more time to spend on the basics and form a solid foundation. As you make progress, you’ll learn advanced topics including generics, collections, lambda expressions, streams and concurrency. This book doesn't just talk about theory—it shows you how things work with little projects, which eventually add up to one big project that brings it all together. By the end of this Java book, you’ll have sound practical knowledge of Java and a helpful guide to walk you through the important parts of Java.
Table of Contents (22 chapters)
1
Part 1: Java Fundamentals
9
Part 2: Object-Oriented Programming
15
Part 3: Advanced Topics

Concurrency

In the previous chapter, we explored the nuances of streamlined data manipulation and parallelized operations that utilize the power of modern multi-core processors. This was already a little introduction to this chapter’s topic: concurrency!

Concurrency allows applications to perform multiple tasks at the same time. This makes the system more efficient. Any available resources can be utilized more efficiently, and this leads to overall improved performance. In order to do multiple things at the same in Java, we need to know quite a bit. That’s what this chapter is for!

Here’s what we’ll cover:

  • A definition of concurrency
  • Working with threads
  • Atomic classes
  • The synchronized keyword
  • Using locks for exclusive thread access
  • Concurrent collections
  • Using ExecutorService
  • Common threading problems and how to avoid them

This is often a dreaded (or threaded?) topic, especially for new developers, so don...