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Hands-On Design Patterns with Java

Hands-On Design Patterns with Java

By : Dr. Edward Lavieri Jr.
2 (1)
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Hands-On Design Patterns with Java

Hands-On Design Patterns with Java

2 (1)
By: Dr. Edward Lavieri Jr.

Overview of this book

Java design patterns are reusable and proven solutions to software design problems. This book covers over 60 battle-tested design patterns used by developers to create functional, reusable, and flexible software. Hands-On Design Patterns with Java starts with an introduction to the Unified Modeling Language (UML), and delves into class and object diagrams with the help of detailed examples. You'll study concepts and approaches to object-oriented programming (OOP) and OOP design patterns to build robust applications. As you advance, you'll explore the categories of GOF design patterns, such as behavioral, creational, and structural, that help you improve code readability and enable large-scale reuse of software. You’ll also discover how to work effectively with microservices and serverless architectures by using cloud design patterns, each of which is thoroughly explained and accompanied by real-world programming solutions. By the end of the book, you’ll be able to speed up your software development process using the right design patterns, and you’ll be comfortable working on scalable and maintainable projects of any size.
Table of Contents (15 chapters)
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1
Section 1: Introducing Design Patterns
4
Section 2: Original Design Patterns
8
Section 3: New Design Patterns

Understanding the lambda design pattern

Lambda functionality was introduced in Java 8 and has forever changed the landscape of programming in Java. The lambda functional design pattern uses lambda functions, also referred to as anonymous functions. These functions are passed as arguments to other functions.

Lambda functions have three parts:

  • A single parameter: (argument)
  • The arrow operator: ->
  • The body: (body)

As with anything else in Java, there are a bunch of rules associated with even this seemingly simple syntax:

  • If the parameter on the left has its type explicitly stated, it and the parameter must be encased in parenthesis, for example, (String a)
  • The body can only call a single method
  • The body must return a result
  • For bodies with only one parameter, you do not need braces or a semicolon
  • For bodies with more than one parameter, you do need braces and a semicolon
  • You...

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