This repository contains concise, commented, and well-structured Java examples that demonstrate how to use the Java Stream API for efficient and modern data processing. Each example focuses on a common data transformation or query operation — from filtering and mapping, to advanced grouping and aggregation.

• 50+ Realistic Examples
  Find, filter, map, reduce, group, sort, combine, and transform data using Stream API with intuitive, idiomatic Java code.

• Educational & Practical
  Each example is presented as a separate, easily understandable static method with clear naming and documentation, making it great for learning, interviews, or reference.

• Covers Core Stream API Use Cases
  Including:

  • Filtering and searching
  • Mapping and transforming
  • Distinctness and deduplication
  • Sorting and ordering
  • Reducing, aggregating, and summarizing
  • Working with objects
  • Advanced grouping and partitioning
  • Optional usage and null safety
  • Collectors and downstream collectors

• Counting, summing, averaging, finding min/max
• Combining and joining strings or lists
• Extracting, flattening, and mapping nested structures
• Grouping and partitioning data
• Generating and processing random data
• Working with custom objects and collections

1. Clone the repo:
   git clone https://github.com/javadev/java-stream-api.git
2. Open in your favorite IDE
3. Run the main class (App.java) to execute all examples, or call any method independently.

• Java learners wishing to deepen practical knowledge
• Java developers needing quick reference or copy-paste solutions
• Instructors/interviewers looking for demonstration snippets
• Anyone exploring the power of functional programming in Java!

Contributions and new stream examples are welcome! Please open an issue or PR.

Let me know if you want a shorter/longer version, or want help with a README including formatting!