Java OOP with Composition: Building Modular Systems — PickAClass
⏱ 2h 42m 📚 27 lessons 🎧 Audio version

Java OOP with Composition: Building Modular Systems

Learn to design robust Java applications by mastering object composition, enabling you to build flexible and maintainable software components.

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About this course

Are you ready to move beyond basic Java syntax and build more complex, organized applications? This course will guide you through the principles of Object-Oriented Programming, specifically focusing on composition, so you can construct sophisticated Java programs that are easy to understand, extend, and maintain. What you'll learn: * Understand core OOP concepts like encapsulation, inheritance, and polymorphism. * Master object composition to create flexible and strong relationships between classes. * Design and implement Java classes using best practices for reusability and clarity. * Apply modern Java features like records for concise data modeling in composite structures. * Practice structuring complex systems through practical car and engine examples. * Learn to write clean, testable Java code for effectively composed objects. The course begins with foundational OOP concepts, then progressively introduces composition through practical examples, culminating in building a simulated car system. Each step is explained in clear, written explanations and accompanied by relevant code snippets to deepen your understanding. This course is designed for absolute beginners in Java programming who have a basic understanding of Java syntax and are ready to learn object-oriented principles. No prior experience with OOP is required. Start your journey to becoming a proficient Java developer today.

What you'll get

  • 📜 Certificate of completion
    Add it to your LinkedIn profile
  • 💬 Personal AI tutor
    Stuck on a lesson? Ask your built-in tutor anything, any time.
  • 🎧 Audio version included
    Learn on the go — no screen needed
  • ♾️ Lifetime access
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  • 📱 Phone or computer
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  • 💸 14-day refund
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  • Short & focused
    2h 42m 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
Java OOP with Composition: Building Modular Systems
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
Java OOP with Composition: Building Modular Systems
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.

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Frequently asked

What do I need to take this course? +

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

How do I pay? +

By card via Stripe. We don’t store card details — Stripe handles them securely.

Can I get a refund? +

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

How long will I have access? +

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

Will I get a certificate? +

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

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