Java Collections and Stream API Foundations — PickAClass
⏱ 2h 30m 📚 25 lessons 🎧 Audio version

Java Collections and Stream API Foundations

Master Java data structures, modern lambda expressions, and Stream API workflows to write clean, efficient, and readable code.

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About this course

Managing data efficiently is at the heart of every robust software application. This course offers a clear, text-based path to understanding how Java handles groups of objects, moving you from basic array limitations to powerful data structures. You will gain a deep understanding of how to store, organize, and manipulate data with confidence. By completing this course, you will transform your coding style from verbose, traditional loops to elegant, functional patterns. You will understand how to choose the right data structures for your application's performance needs and write modern, maintainable code. What you'll learn: - Understand the core interfaces of the Java Collections Framework, including List, Set, and Map - Apply lambda expressions to write concise and readable functional code - Master the Stream API to filter, map, and reduce data collections efficiently - Use modern collection methods introduced in recent Java updates for cleaner data manipulation - Practice handling null values safely and writing robust unit tests using modern testing principles - Configure and optimize collection choices based on time and space complexity basics The course begins with foundational concepts, defining key terminology and the architecture of the collections framework. You will then progress through step-by-step written explanations, code walkthroughs, and practical exercises that demonstrate real-world data manipulation. This course is designed for beginner Java programmers who have a basic grasp of variables and control flow but want to learn modern data handling techniques. No prior experience with functional programming or collections is required. Start reading today to write cleaner, more efficient Java code using modern collections and streams.

What you'll get

  • 📜 Certificate of completion
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  • 💬 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
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Certificate of Mastery
This certifies that
Name Surname
has successfully demonstrated mastery of
Java Collections and Stream API Foundations
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 Collections and Stream API Foundations
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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What do I need to take this course? +

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

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

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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.

Will I get a certificate? +

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

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