Java Stream API Tutorial | Sorting + Grouping + collectingAndThen Explained | Real-Time Example
In this video, we break down one of the most powerful combinations in the Java Stream API —
👉 sort()
👉 groupingBy()
👉 collectingAndThen()
👉 custom Comparator sorting
Using a real-time example of Order Management, you’ll learn how to:
✔ Group data by a specific field (username)
✔ Apply post-processing on each group
✔ Sort each grouped list in descending order
✔ Build clean, production-level Stream pipelines
This video is perfect for:
🔹 Java developers (beginner to senior)
🔹 Interview preparation
🔹 Backend engineers
🔹 Anyone learning advanced Stream operations
If you’re preparing for Java interviews, this concept is frequently asked in top tech companies.
💬 Comment below if you want more real-time problems and advanced Stream solutions.
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