Top 50+ Java Streams Coding Interview Questions- How to sort by multiple fields using streams

Published: 07 May 2025
on channel: Coding with Vighnesh

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📊 How to Sort by Multiple Fields Using Java Streams | Java 8 Stream API Tutorial 📊

In this video, you'll learn how to sort a list of objects by multiple fields using Java Streams, one of the most important and frequently asked concepts in real-world development and technical interviews.

Using the power of Java 8's Stream API along with Comparators and method references, we'll show you how to sort data in a clean, readable, and functional way — by more than one attribute (e.g., first by name, then by age).

This is especially useful for sorting records like employees, products, students, or any custom objects in Java.

🧠 What You’ll Learn:
✅ How to use Comparator.comparing() and thenComparing()
✅ Sorting custom objects with multiple fields (e.g., name, age, salary)
✅ Writing clear, concise, and functional sorting logic
✅ Using lambda expressions and method references effectively
✅ Best practices for creating reusable comparator logic in streams

💡 Why This Is Asked in Interviews & Used in Production:
🔹 Demonstrates deep understanding of object comparison and sorting
🔹 Encourages clean and declarative programming using Stream API
🔹 Helps you build real-world data sorting pipelines with multi-level criteria
🔹 Common in sorting reports, tables, UI grids, and database result sets

👨‍💻 Who Should Watch This Video:
✔️ Java developers working with lists of objects
✔️ Interview candidates preparing for advanced Java questions
✔️ Anyone building data-driven applications needing sorted output
✔️ Developers wanting to master modern Comparator patterns in Java 8+

📺 Watch This If You Want To:
🔹 Learn how to sort by multiple properties in a single stream operation
🔹 Understand the difference between comparing(), thenComparing(), and custom comparators
🔹 Write better, more maintainable sorting code in real applications
🔹 Strengthen your command of Java 8's functional programming style

📌 Subscribe to the channel for more Java Stream tutorials, interview coding challenges, and tips for writing cleaner, more modern Java.
💬 Drop a comment if you'd like to see sorting with null handling, descending order, or dynamic field selection.
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#JavaStreams #Java8 #SortByMultipleFields #ComparatorJava #StreamAPI #JavaInterviewQuestions #JavaDeveloper #FunctionalProgramming #CodingInterview #JavaTips #TechInterviews #JavaSorting #SoftwareEngineer #LearnJava

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