Data Structures in Java Course
This hands-on course teaches building a high-performance in-memory store using Java data structures, covering concurrency, indexing, optimization, transactions, and testing.

4 to 360 hours flexible workload
valid certificate in your country
What will I learn?
Master core data structures in Java by building a high-performance in-memory store from scratch. Learn to model products and orders, design clean APIs, use HashMap-based indexes, and choose optimal collections for lookups and history. Practice concurrency with atomic counters, locks, and transactional updates, then validate your work with benchmarks, profiling, and solid unit and integration tests in a compact, hands-on course.
Elevify advantages
Develop skills
- Design concurrent Java data structures: build fast, thread-safe in-memory stores.
- Implement Java indexes: HashMap and secondary indexes for instant lookups.
- Optimise APIs with Big-O insight: document and tune time and space complexity.
- Build transactional flows in memory: validate orders, update stock, ensure consistency.
- Benchmark and test Java stores: JMH profiling, unit and concurrency testing.
Suggested summary
Before starting, you can change the chapters and the workload. Choose which chapter to start with. Add or remove chapters. Increase or decrease the course workload.What our students say
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