Java Class Library: Generics, Collections, and I/O — PickAClass
3.7 (3) ⏱ 2h 30m 📚 25 lessons

Java Class Library: Generics, Collections, and I/O

Learn to use the Java standard library to build type-safe applications, manage complex data collections, and interact with the file system.

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About this course

Once you understand basic Java syntax, the next step is mastering the built-in libraries that make professional software development possible. This course provides a clear path through the essential components of the Java Class Library, ensuring you can handle data and external resources like a professional. You will transform your coding ability by learning how to organize information efficiently and write code that works across different data types without sacrificing safety. The course covers everything from basic data structures to modern functional programming patterns used in the industry today. What you'll learn: - Master Java Generics to write flexible, reusable, and type-safe code - Implement the Collections Framework to manage lists, sets, and maps effectively - Utilize the Stream API for modern, functional-style data processing - Perform robust file operations including reading, writing, and managing file systems - Apply modern Date and Time APIs to handle temporal data accurately - Understand the fundamentals of the Optional class to write cleaner, null-safe code Starting with foundational definitions and the logic behind generics, the material moves into the practical application of data structures and concludes with modern stream and file management techniques. You will read through detailed explanations and analyze code snippets to build a deep understanding of how these libraries function. This course is designed for beginners who have a basic grasp of Java syntax and are ready to expand their functional capabilities. No advanced prerequisites are required. Start building more robust and professional Java applications today.

What you'll get

  • 📜 Certificate of completion
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  • 💬 Personal AI tutor
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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
Java Class Library: Generics, Collections, and I/O
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 Class Library: Generics, Collections, and I/O
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 (3)

ธีระศักดิ์ มั่นคง TH Verified learner
★ 4 · July 24, 2026

It's a decent introduction. Could benefit from more diverse examples and a slightly better flow between modules.

เสกสรรค์ ทวีทรัพย์ TH
★ 4 · July 14, 2026

Good introduction. I appreciated the clear steps, although some of the later modules could have used more examples.

سارة DZ Verified learner
★ 3 · June 10, 2026

It's a decent introduction. Could use a few more real-world examples to solidify the concepts, though.

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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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