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

Getting to know collections

Collections are worth getting to know. Collections are a much more elegant way of dealing with multiple values in one variable than arrays. A common example of a collection would be a list.

Writing any proper Java application without collections would be very complicated. You’d probably start by creating some classes that will act like Java’s built-in collections. They play a vital role in software development as they provide a means to manage and organize data.

There are many reasons why we need them, but let’s just list (collection pun) a few:

  • Managing large amounts of data: As applications grow in complexity, they often need to deal with large amounts of data. Collections help store and manage these datasets. They also come with helpful methods that make it easier to perform typical operations on data, such as searching and filtering.
  • Storing and manipulating various data structures: Different data structures have...