Java Object-Oriented Programming: Core Principles and Practice — PickAClass
4.2 (5) ⏱ 2h 48m 📚 28 lessons 🎧 Audio version

Java Object-Oriented Programming: Core Principles and Practice

Master encapsulation, inheritance, polymorphism, and modern Java features like Records to write clean, reusable, and maintainable object-oriented code.

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About this course

Transitioning from basic scripting to professional software development requires a solid grasp of how to structure code. Object-oriented programming (OOP) is the industry standard for building scalable, robust Java applications. This text-based course takes you from basic programming concepts to a confident understanding of object-oriented design. You will learn how to model real-world problems using Java classes, write reusable code, and adopt modern standards that make your applications easy to maintain and scale. What you'll learn: - Understand foundational OOP concepts including encapsulation, inheritance, polymorphism, and abstraction. - Design robust Java classes with appropriate fields, methods, constructors, and access modifiers. - Implement interfaces and abstract classes to build flexible and decoupled software components. - Apply modern Java features like Records for clean, immutable data modeling. - Organize your code effectively using standard package structures and clean code conventions. - Practice reading and analyzing object-oriented code snippets to solve design challenges. Starting with core definitions and basic class structures, the course guides you step-by-step through advanced relationship modeling, interface design, and modern development conventions. Each concept is reinforced with clear written explanations and practical code examples. This course is designed for beginner developers who already know basic programming concepts (such as variables, loops, and functions) and want to transition to object-oriented development. No prior OOP experience is required. Start reading today to elevate your programming skills and build a strong foundation in Java development.

What you'll get

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  • Short & focused
    2h 48m 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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Certificate of Mastery
This certifies that
Name Surname
has successfully demonstrated mastery of
Java Object-Oriented Programming: Core Principles and Practice
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
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PickAClass — Name Surname
Java Object-Oriented Programming: Core Principles and Practice
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 (5)

Dimitar Borisov BG
★ 3 · July 26, 2026

Hmm, I'm not sure this is for absolute beginners. It assumes a bit of prior knowledge that wasn't explicitly taught. Some examples were confusing.

Paul Richter CH
★ 4 · July 21, 2026

This was a good introduction. The structure is logical, and it covers the basics effectively. Might be too introductory for advanced learners.

ناصر بن علي الخروصي OM Verified learner
★ 5 · July 16, 2026

Loved the practical application examples. Exactly the kind of hands-on learning I was looking for.

يوسف بن محمد BH Verified learner
★ 5 · July 8, 2026

This is exactly what I was looking for. Loved the practical examples, they really helped solidify the concepts.

Paula Ríos CL
★ 4 · June 12, 2026

Thoroughly enjoyed this course. The way the information was presented was excellent, and the practical applications were highlighted effectively. Great job!

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