Book Image

Design Patterns and Best Practices in Java

By : Kamalmeet Singh, Adrian Ianculescu, Lucian-Paul Torje
Book Image

Design Patterns and Best Practices in Java

By: Kamalmeet Singh, Adrian Ianculescu, Lucian-Paul Torje

Overview of this book

Having a knowledge of design patterns enables you, as a developer, to improve your code base, promote code reuse, and make the architecture more robust. As languages evolve, new features take time to fully understand before they are adopted en masse. The mission of this book is to ease the adoption of the latest trends and provide good practices for programmers. We focus on showing you the practical aspects of smarter coding in Java. We'll start off by going over object-oriented (OOP) and functional programming (FP) paradigms, moving on to describe the most frequently used design patterns in their classical format and explain how Java’s functional programming features are changing them. You will learn to enhance implementations by mixing OOP and FP, and finally get to know about the reactive programming model, where FP and OOP are used in conjunction with a view to writing better code. Gradually, the book will show you the latest trends in architecture, moving from MVC to microservices and serverless architecture. We will finish off by highlighting the new Java features and best practices. By the end of the book, you will be able to efficiently address common problems faced while developing applications and be comfortable working on scalable and maintainable projects of any size.
Table of Contents (15 chapters)
Title Page
Packt Upsell
Contributors
Preface
Index

A brief history of Java


Java 1 was initially launched in 1995, and its Enterprise edition, or Java EE, was launched in 1999 with Java 2. Considering the fact that Java has been around for more than 20 years, there is no doubt that Java has what it takes to be the language of choice when it comes to building complex Enterprise applications.

Let's take a look at the features that made Java an instant hit:

  • Object-oriented: Object-oriented languages are easy to learn, as they are closer to the real world. For developers already working with object-oriented languages, such as C++, it was easier to shift to Java, making it a popular choice.
  • Platform independent: Write once and execute anywhere is the mantra for Java. As Java code is compiled into bytecode, which gets interpreted by JVM, there is no restriction on where to code and where to execute. We can develop a Java program on a Linux machine and run it on a Windows or macOS machine without any problem.
  • Security: As Java code gets converted to...