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Learn Java with Projects

Learn Java with Projects

By : Dr. Seán Kennedy, Maaike van Putten
4.9 (51)
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Learn Java with Projects

Learn Java with Projects

4.9 (51)
By: Dr. Seán Kennedy, Maaike van Putten

Overview of this book

Learn Java with Projects bridges the gap between introductory Java guides and verbose, theoretical references. This book is crafted to build a strong foundation in Java programming, starting from the Java environment itself. It goes far beyond a superficial review of the topics; it demonstrates, with practical examples, why these fundamentals are crucial for developing a deep understanding of the language. You'll not only learn about classes and objects but also see how these concepts are used in practical scenarios, enhancing your ability to write clean, efficient code. The engaging projects throughout the book provide real-world applications of complex topics, ensuring you can connect theoretical knowledge with practical skills. What makes this book stand out is the expertise of its authors. Seán, a seasoned university lecturer with over 20 years of experience, brings academic rigor and real-world insights, thanks to his work with a prestigious software company. Maaike, a passionate software developer and award-winning trainer, brings hands-on experience and a love for teaching. By the end of this book, you'll not only understand Java's core concepts and the critical advanced ones, but also gain practical experience through projects that mimic real-life challenges.
Table of Contents (22 chapters)
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1
Part 1: Java Fundamentals
9
Part 2: Object-Oriented Programming
15
Part 3: Advanced Topics

Lambda Expressions

In this chapter, we will cover lambda expressions, which is one of my favorite features. Introduced in Java 8, lambda expressions (lambdas) brought functional programming to Java. First, we will define a functional interface and its relationship with lambdas. We will demonstrate both custom and API-based lambda expressions. We will also explain the concept of “final or effectively final” concerning local variables used inside a lambda expression.

After that, we will cover method references. We will discuss and present example code showing bound, unbound, static, and constructor method references. Lastly, we will explain the critical nature of context in understanding method references.

This chapter covers the following main topics:

  • Understanding lambda expressions
  • Exploring functional interfaces from the API
  • Mastering method references

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