Refactoring to SOLID Java from Pluralsight

This course will teach you how to practically apply SOLID principles in Java applications to avoid technical debt and build robust, loosely coupled systems that can evolve easily over time.

In this course, Refactoring to SOLID Java, you’ll learn to refactor applications by applying SOLID object-oriented principles to make them more robust and easy to maintain. First, you’ll explore the Single Responsibility Principle and why this is probably the most crucial concept in programming. Next, you’ll discover the Open Closed principle and learn how to evolve applications without altering existing code. After that, you'll explore the Liskov Substitution Principle and discover how to create correct relationships using inheritance. Then, you'll see why it’s not a good idea to create “fat” interfaces and change that using the Interface Segregation Principle. Finally, you’ll learn how to create loosely coupled components by applying the Dependency Inversion Principle. When you finish this course, you’ll have the skills and knowledge to refactor legacy JAVA projects into systems that respect the SOLID and are easy to understand, evolve, and maintain.

What's inside

Syllabus

Course Overview

Single Responsibility Principle

Open-closed Principle

Liskov Substitution Principle

Interface Segregation Principle

Dependency Inversion Principle

Good to know

Know what's good

, what to watch for

, and possible dealbreakers

Applies SOLID principles for practical application in Java to avoid technical debt and build robust and loosely coupled systems that evolve over time

Improves the robustness and maintainability of applications by refactoring them using SOLID object-oriented principles

Explores the Single Responsibility, Open-Closed, Liskov Substitution, Interface Segregation, and Dependency Inversion principles

Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in Refactoring to SOLID Java with these activities:

Refresh solid design principles

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Solid design principles are essential building blocks in object-oriented programming. Review Java-specific information to prepare for this course.

Browse courses on Single Responsibility Principle

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Review class files to find examples of the SOLID Principles
Research Java-specific interpretations of the SOLID Principles

Review Head First Design Patterns

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Review design patterns in Java using a comprehensive book that covers a range of patterns for beginners

View Head First Design Patterns: A Brain-Friendly... on Amazon

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Join a study group to discuss SOLID principles

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Engage with peers to ask questions, share insights, and work through complex problems related to SOLID principles.

Browse courses on SOLID Principles

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Find or create a study group with peers who are also taking this course
Meet regularly to discuss the course material and share resources
Collaborate on practice problems and projects

Five other activities

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Solve coding challenges with SOLID

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Practice applying SOLID principles to real-world coding challenges to reinforce your understanding.

Browse courses on SOLID Principles

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Find online coding challenges that focus on applying SOLID principles
Attempt to solve the challenges without looking at solutions
Review solutions and identify areas for improvement

Find a mentor who can provide guidance on SOLID principles

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Connect with an experienced professional who can offer insights and guidance on applying SOLID principles effectively.

Browse courses on SOLID Principles

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Identify potential mentors who have experience with SOLID principles
Reach out to potential mentors and request their guidance
Schedule regular meetings to discuss your progress and challenges

Leetcode practice

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Solving coding challenges on Leetcode will help you solidify core object-oriented design concepts and strengthen your Java programming fundamentals.

Browse courses on Single Responsibility Principle

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Select a problem from Leetcode that aligns with the SOLID principles you are currently studying.
Design and implement a solution in Java that adheres to the chosen SOLID principle.
Submit your solution and review the feedback.

Write a blog post about your experience applying SOLID principles

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Share your knowledge and experience by writing a blog post that reflects on how you applied SOLID principles in your project.

Browse courses on SOLID Principles

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Summarize the key SOLID principles and their benefits
Describe your application and how you applied SOLID principles in its design and implementation
Share the challenges you faced and the solutions you found

Participate in a coding competition focused on SOLID principles

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Test your skills and knowledge of SOLID principles by participating in a coding competition that emphasizes their application.

Browse courses on SOLID Principles

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Find and register for a coding competition that focuses on SOLID principles
Prepare for the competition by practicing and reviewing SOLID principles
Participate in the competition and strive for excellence in applying SOLID principles

Career center

Learners who complete Refactoring to SOLID Java will develop knowledge and skills that may be useful to these careers:

Software Architect

As a Software Architect, you are responsible for the high-level design, and architecture of software applications and systems. Taking this course, "Refactoring to SOLID Java," may help you build a strong foundation in understanding how to design and implement software systems that are easy to maintain and evolve over time.

See salaries and explore the career path for Software Architect

Software Developer

As a Software Developer, you write code to implement designs created by Software Engineers and Software Architects. Taking this course, "Refactoring to SOLID Java," may help build a strong foundation for understanding how to write code that is robust, maintainable, and extensible.

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Cloud Architect

As a Cloud Architect, you design and implement cloud computing solutions to meet the needs of organizations. Taking this course, "Refactoring to SOLID Java," may be useful in helping you build a foundation for understanding how to design and implement cloud-based systems that are robust, maintainable, and extensible.

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Technical Lead

As a Technical Lead, you lead and mentor software development teams, ensuring that projects are completed on time, within budget, and to the required quality standards. Taking this course, "Refactoring to SOLID Java," may be useful in helping you build a foundation for understanding how to lead teams in writing robust, maintainable, and extensible code.

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Data Engineer

As a Data Engineer, you design, build, and maintain data pipelines and systems to support data-driven decision-making. Taking this course, "Refactoring to SOLID Java," may be useful in helping you build a foundation for understanding how to design and implement data systems that are robust, maintainable, and extensible.

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Computer Programmer

As a Computer Programmer, you implement designs created by Software Engineers and Software Architects. Taking this course, "Refactoring to SOLID Java," may be useful in helping you build a foundation for understanding how to write code that is robust, maintainable, and extensible.

See salaries and explore the career path for Computer Programmer

Software Tester

As a Software Tester, you test and evaluate software systems to ensure that they meet requirements and are free of defects. Taking this course, "Refactoring to SOLID Java," may be useful in helping you build a foundation for understanding how to write effective test cases and evaluate the quality of software systems.

See salaries and explore the career path for Software Tester

Quality Assurance Engineer

As a Quality Assurance Engineer, you test and evaluate software systems to ensure that they meet requirements and are free of defects. Taking this course, "Refactoring to SOLID Java," may be useful in helping you build a foundation for understanding how to write effective test cases and evaluate the quality of software systems.

See salaries and explore the career path for Quality Assurance Engineer

Project Manager

As a Project Manager, you plan, execute, and close projects to achieve specific goals. Taking this course, "Refactoring to SOLID Java," may be useful in helping you build a foundation for understanding how to manage software development projects and ensure that they are completed on time, within budget, and to the required quality standards.

See salaries and explore the career path for Project Manager

DevOps Engineer

As a DevOps Engineer, you work to bridge the gap between development and operations teams to ensure that software systems are deployed and maintained efficiently and reliably. Taking this course, "Refactoring to SOLID Java," may be useful in helping you build a foundation for understanding how to implement DevOps practices that can improve the quality and reliability of software systems.

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Information Technology Manager

As an Information Technology Manager, you plan, implement, and manage information technology systems for organizations. Taking this course, "Refactoring to SOLID Java," may be useful in helping you build a foundation for understanding how to manage software development projects and ensure that systems are robust, maintainable, and extensible.

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Computer Scientist

Computer Scientists conduct research in various areas of computer science, including software engineering, artificial intelligence, and computer architecture. Taking this course, "Refactoring to SOLID Java," may be useful in helping you build a foundation for understanding how to design and implement software systems that are robust, maintainable, and extensible.

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Systems Analyst

As a Systems Analyst, you analyze, design, and implement computer systems to meet the needs of organizations. Taking this course, "Refactoring to SOLID Java," may be useful in helping you build a foundation for understanding how to analyze and design systems that are robust, maintainable, and extensible.

See salaries and explore the career path for Systems Analyst

Software Engineer

As a Software Engineer, you may work on the design, implementation, testing, deployment, and maintenance of software systems. Taking this course, "Refactoring to SOLID Java," may be useful in helping you build a foundation for understanding how to write robust, maintainable, and extensible code.

See salaries and explore the career path for Software Engineer

Database Administrator

As a Database Administrator, you are responsible for the design, implementation, and maintenance of database systems. Taking this course, "Refactoring to SOLID Java," may be useful in helping you build a foundation for understanding how to design and implement database systems that are robust, maintainable, and extensible.

See salaries and explore the career path for Database Administrator