Java 8 Stream API Complete Guide | 15 Basic + 4 Advanced Interview Questions | Java Interview

Published: 22 April 2026
on channel: codemonarch

🔥 The ONLY Java 8 Stream API video you will ever need! In this
complete guide we solve 15 Basic and 4 Advanced Stream API
coding interview questions in one single video! Your one stop
destination for mastering Java Stream API completely!

📌 Basic Stream API Questions Covered:
✅ What is Stream API in Java 8?
✅ filter() — Filter elements from a list
✅ map() — Transform each element
✅ sorted() — Sort in ascending and descending order
✅ distinct() — Remove duplicate elements
✅ count() — Count elements in a stream
✅ sum() — Find sum of all elements
✅ average() — Find average of elements
✅ min() and max() — Find minimum and maximum
✅ collect() — Collect stream to list
✅ allMatch() anyMatch() noneMatch()
✅ forEach() — Iterate over elements
✅ limit() and skip() — Pagination in streams
✅ findFirst() and findAny()
✅ groupingBy() — Group elements by property

📌 Advanced Stream API Questions Covered:
✅ map() vs flatMap() — Key difference explained
✅ Collectors.joining() — Join list into string
✅ partitioningBy() — Split into two groups
✅ Stream with custom objects — Employee problems

💡 This is the most complete Java 8 Stream API tutorial on
YouTube! Everything you need to crack Java Stream API
interview questions — covered in one single video. Perfect
for Java interview preparation at Amazon, Google, Microsoft,
TCS, Infosys and Wipro!

🎯 This video is perfect for:
👉 Java developers preparing for interviews
👉 Students learning Java 8 Stream API
👉 Developers brushing up on Java 8 features
👉 Anyone who wants to master Stream API completely

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