Book Image

Hands-On Design Patterns with Java

By : Dr. Edward Lavieri
2 (1)
Book Image

Hands-On Design Patterns with Java

2 (1)
By: Dr. Edward Lavieri

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)
Free Chapter
1
Section 1: Introducing Design Patterns
4
Section 2: Original Design Patterns
8
Section 3: New Design Patterns

Implementing the proxy design pattern

Proxy, in the Java context, is defined as having the authority to represent another object. The proxy design pattern is true to its name in that it establishes a placeholder so that an object other than itself can control access. Pointer object references lack sophistication. Proxy references can accomplish the following with regards to an object reference:

  • Utilize smart pointers that can count the number of references to a given object. This supports garbage collection.
  • Object locking so it cannot be modified by other objects.
  • Memory loading enhancements.

The primary justification for using the proxy design pattern is to save the tremendous memory and processing time that is required to create complex objects.

Use case

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