Object-Oriented Design Patterns and SOLID Principles — PickAClass
4.0 (4) ⏱ 2h 30m 📚 25 lessons 🎧 Audio version

Object-Oriented Design Patterns and SOLID Principles

Build maintainable and scalable software by mastering classic design patterns and the core principles of clean architecture.

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About this course

Writing code that works is only the first step; writing code that is easy to maintain, extend, and understand is what defines a professional developer. This course provides a clear, text-based path to mastering the architectural standards used to build complex, high-quality software. You will learn how to move beyond basic programming and start thinking like a software architect. Through written explanations and practical code examples, you will discover how to identify structural weaknesses and apply proven solutions to create resilient applications. What you'll learn: - Understand the five SOLID principles to eliminate rigid and fragile code. - Apply Creational patterns to manage object instantiation with flexibility. - Master Structural patterns to organize entities and simplify system relationships. - Implement Behavioral patterns to streamline communication between software components. - Practice modern techniques like composition over inheritance and using immutable data structures. - Recognize common code smells and learn which patterns effectively resolve them. The course begins with essential terminology and foundational object-oriented concepts before exploring the classic 23 Gang of Four patterns and modern architectural best practices. This course is designed for beginners who are familiar with basic programming logic and want to learn how to structure professional-grade applications. No prior experience with design patterns is required. Start reading to transform your approach to software design and write cleaner code.

What you'll get

  • 📜 Certificate of completion
    Add it to your LinkedIn profile
  • 💬 Personal AI tutor
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  • 🎧 Audio version included
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  • ♾️ Lifetime access
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  • 📱 Phone or computer
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  • 💸 14-day refund
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  • Short & focused
    2h 30m of practical content

Certificate of completion

Every course you complete on PickAClass issues a credential like this — original, with its own code, verifiable by URL, and detailed about what was actually demonstrated.

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PickAClass
Skills profile · verifiable
Document
Certificate of Mastery
This certifies that
Name Surname
has successfully demonstrated mastery of
Object-Oriented Design Patterns and SOLID Principles
Skills demonstrated
Behavioral pattern analysis
Foundational
1.2 hrs
Decision-architecture frameworks
Proficient
1.4 hrs
A/B test design
Proficient
1.7 hrs
Behavioral copywriting
Advanced
1.9 hrs
P
PickAClass — Name Surname
Object-Oriented Design Patterns and SOLID Principles
Page 2 of 2
Performance detail
Coursework summary
Lessons completed 14 / 14
Practice questions 26 / 28
Assignments submitted 4 (avg 4.5 / 5)
Capstone project Reviewed — 4.6 / 5
Total practice 6.2 hrs
Performance benchmark
Cohort rank Top 12% of 1,625
Time to completion 11 days (median: 22)
Mastery score 91 / 100
Practice-question score 94%
Skill verification Verified Skill Path
Verify this credential
pickaclass.com/certificates/PCC-2026-X4F7-AP19
Issued under the academic standards of PickAClass. Skill levels reflect assessed performance against the course's competency rubric. This is an original credential of this platform.

Reviews (4)

Yewande Ibrahim NG Verified learner
★ 4 · July 11, 2026

Brilliant course design. The way concepts build on each other is seamless. Very practical and well-explained.

Regina Flores PE Verified learner
★ 3 · July 11, 2026

Loved this! The examples were super helpful and really solidified the concepts. I'm already thinking about how I can apply this.

Olamide Adeyemi NG Verified learner
★ 4 · June 13, 2026

Pretty good introduction. The examples were helpful, but I wish there was a bit more practice material. Solid value for the cost.

Emilia Navarro CL Verified learner
★ 5 · May 29, 2026

This was brilliant. The examples were super helpful and really solidified the concepts. Left me feeling inspired and ready to apply what I learned.

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Just a phone or computer with internet. No installs, no special hardware.

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Yes — full refund within 14 days, no questions asked.

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Forever. Once you purchase, the course is yours to revisit anytime.

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Yes. On completion you'll receive a certificate you can add to your LinkedIn profile.

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