Java Data Structures: Trees, Graphs, and Hash Tables โ€” WalkSelf
โ˜… 4.0 (2) โฑ 3h ๐Ÿ“š 30 lessons

Java Data Structures: Trees, Graphs, and Hash Tables

Gain a solid understanding of trees, graphs, and hashing in Java to write efficient, optimized code and solve complex programming challenges.

  • ๐Ÿ’ฌ AI instructor
    Ask about any lesson and get a clear answer instantly, anytime.
  • ๐Ÿ• Start anytime
    No schedules or deadlines โ€” learn at your own pace, whenever suits you.
  • ๐ŸŒ In English
    Lessons, tasks and certificate โ€” all fully in your language.

About this course

Storing and retrieving data efficiently is the cornerstone of high-performance software development. If you want to move beyond basic arrays and lists, mastering non-linear data structures like trees, graphs, and hash tables is your next essential step. In this text-based course, you will transition from basic programming to writing highly optimized Java applications. You will learn the foundational theory behind complex data structures and implement them step-by-step using modern Java features, ensuring your code is both clean and performant. What you'll learn: - Understand the fundamental concepts of non-linear data structures and their memory layouts. - Build and traverse binary trees and binary search trees using clean Java code. - Implement graph representations and explore fundamental search algorithms like BFS and DFS. - Apply hashing techniques to achieve constant-time data retrieval. - Leverage modern Java Collections Framework features and generics for type-safe implementations. - Analyze the time and space complexity of your algorithms using Big O notation. The course begins with core definitions and structural concepts before guiding you through written implementations, step-by-step code walkthroughs, and conceptual exercises to solidify your understanding. This course is designed for aspiring developers and students who have a basic grasp of Java syntax and want to elevate their algorithmic thinking, with no advanced prerequisites required. Start reading today to unlock the power of efficient data management in Java.

What you'll get

  • ๐Ÿ“œ Certificate of completion
    Add it to your LinkedIn profile
  • ๐Ÿ’ฌ Personal AI tutor
    Stuck on a lesson? Ask your built-in tutor anything, any time.
  • โ™พ๏ธ Lifetime access
    Come back anytime, no expiry
  • ๐Ÿ“ฑ Phone or computer
    Works anywhere, any device
  • ๐Ÿ’ธ 14-day refund
    No questions asked
  • โšก Short & focused
    3h of practical content

Reviews (2)

Lucรญa Castro CO Verified learner
โ˜… 4 ยท August 18, 2026

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

Elรญn Sveinsdรณttir IS Verified learner
โ˜… 4 ยท June 26, 2026

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

Write a review

โ˜†โ˜†โ˜†โ˜†โ˜†
You'll be asked to sign in after sending โ€” your draft is saved.

Learners also took

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 donโ€™t store card details โ€” Stripe handles them securely.

Can I get a refund? +

Yes โ€” 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.

Built for learners in
Tech Design Finance Marketing Healthcare Education Hospitality Manufacturing