Top 50+ Java Streams Coding Questions - How to join two streams ? #javainterview #java8 #java8stream

Whether you're dealing with lists, sets, or custom data sources — being able to merge multiple streams is a core part of writing clean and efficient Java 8+ code.

🧠 What You’ll Learn:
✅ How to merge two Java Streams into one
✅ Best practices for working with single-use streams
✅ Alternative approaches for merging more than two streams
✅ Functional patterns for stream processing and chaining operations

💡 Why It Matters in Interviews and Production Code:
🔹 Commonly asked in Java coding interviews involving data merging or transformation
🔹 Encourages use of declarative programming with Streams
🔹 Helps improve code readability and flexibility for data pipelines
🔹 Used in real-world scenarios like file processing, batch operations, and list combination

👨‍💻 Who Should Watch This Video:
✔️ Java developers learning or reviewing the Stream API
✔️ Interview candidates preparing for functional coding rounds
✔️ Developers looking to write more concise and modern Java code
✔️ Anyone who wants to master stream composition and chaining in Java

📺 Watch This If You Want To:
🔹 Learn how to handle multiple streams cleanly
🔹 Combine streams for processing, filtering, or mapping
🔹 Gain confidence in building stream pipelines from different sources

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