GitHub - srinivas6303/Java-StreamAPI-Problems: This repository contains 45+ hands-on problems based on Java Stream API, designed to help Java learners and backend developers master functional-style programming using streams.
This repository contains 45+ hands-on problems based on Java Stream API, designed to help Java learners and backend developers master functional-style programming using streams.
Each problem focuses on real-time use cases like:
- Filtering & Mapping
- Sorting & Reducing
- Grouping & Counting
- Optional Handling
- Collectors & Custom Operations
- Streams on Lists, Maps, Arrays, Objects, and Nested Data
📂 Folder contains:
- ✅ Problem Statement (as comment)
- ✅ Solution using Stream API
- ✅ Main method to execute
🚀 How to Run
- Clone the repository
git clone https://github.com/username/Java-StreamAPI-Problems.git
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Open in any Java IDE
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IntelliJ IDEA / Eclipse / VS Code
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Run any problem file to test the solution
🎯 Learning Goals
- ✔ Understand and apply functional programming in Java
- ✔ Replace loops with elegant stream operations
- ✔ Prepare for interviews & coding assessments
- ✔ Write clean, readable, and optimized Java code
✅ Topics Covered
map(), filter(), reduce()
sorted(), distinct(), limit(), skip()
collect(), Collectors.groupingBy(), joining()
Optional usage with Streams
Streams with List, Set, Map, and custom objects
👨💻 Author
Srinivas Dappu
GitHub: https://github.com/srinivas6303
LinkedIn: https://www.linkedin.com/in/dappusrinivas/
⭐ If this repository helped you, don’t forget to star it!