Mastering Intermediate Operations in Java Stream API | Transform, Filter & Debug Streams
Welcome back to Dev Portal!
In this tutorial, we take a deep dive into the Intermediate Operations of Java Stream API, an essential feature introduced in Java 8. Intermediate operations empower you to process, filter, and transform data in a concise, readable, and efficient way.
📌 What You'll Learn in This Video:
1️⃣ What are Intermediate Operations?
Understand their purpose and lazy nature.
2️⃣ Key Intermediate Operations Explained with Examples:
filter(): Select elements based on conditions.
map(): Transform each element in a stream.
flatMap(): Flatten nested data structures.
distinct(): Remove duplicate elements.
sorted(): Sort data in natural or custom order.
peek(): Debug your streams effortlessly.
limit() and skip(): Restrict or skip elements for precise control.
3️⃣ Combining Multiple Operations
Build powerful pipelines to filter, transform, deduplicate, and sort data efficiently.
Practical Examples Covered:
✅ Filtering names that start with 'H'
✅ Transforming strings to uppercase.
✅ Flattening nested lists into a single stream.
✅ Debugging stream operations with peek().
✅ Creating a data pipeline for even-number filtering, squaring, deduplication, and sorting.
📝 Notes: https://github.com/nakulmitra/java-tu...
💡 Why Watch This Video?
Gain hands-on knowledge of key Stream API operations.
Learn to chain operations for real-world data processing scenarios.
Master debugging techniques with peek() and optimize your pipeline's performance.
🔔 What’s Next?
Stay tuned for our next tutorial, where we’ll cover Terminal Operations in Java Streams, including aggregation, reduction, and data collection.
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Chapters for Quick Navigation:
0:00 - Introduction
0:26 - What Are Intermediate Operations?
0:46 - filter(): Selecting Elements Based on a Condition
2:05 - map(): Transforming Elements in a Stream
3:17 - flatMap(): Flattening Nested Lists
5:32 - distinct(): Removing Duplicate Elements
6:56 - sorted(): Sorting Elements
7:50 - Custom Sorting Example
8:38 - peek(): Useful for Debugging
10:10 - limit() and skip(): Restricting and Skipping Elements
12:03 - Combining Intermediate Operations
16:59 - Conclusion
📢 Got questions? Drop them in the comments below - we’re here to help!
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