JP Morgan Chase – Round 1 - Q & A | Recently Asked (Dec 2025) | Java Developer

In this video, we go through real Java interview questions asked at JP Morgan Chase – Round 1 (Dec 2025). These questions are commonly asked for Java Developer / Backend roles and focus heavily on Core Java, Collections, Multithreading, and Java 8+ concepts.

If you’re preparing for product-based companies or financial firms, this video will help you understand what interviewers actually ask and expect.

🕒 Timestamps:
00:00 Introduction & Interview Context
00:34 Difference between Comparable & Comparator
09:57 Write a Thread-Safe Singleton
25:00 Sort a Map by Keys & Values
30:45 What is Try-With-Resources?
32:57 Streams vs Collections – Differences
34:56 HashMap vs ConcurrentHashMap

👨‍💻 Questions Covered:
• Difference between Comparable and Comparator
• Writing a thread-safe Singleton
• Sorting a Map by keys and values
• Understanding try-with-resources
• Streams vs Collections – core differences
• HashMap vs ConcurrentHashMap

🎯 What interviewers are testing:
• Core Java fundamentals
• Multithreading and concurrency concepts
• Java Collections and performance tradeoffs
• Java 8+ features and best practices
• Ability to explain concepts clearly, not just code

🧠 Why this video is useful:
• Based on real interview experience
• Focused on practical explanations
• Covers high-frequency interview topics
• Ideal for Java backend and enterprise roles

This video is perfect for JP Morgan Chase interviews, Java Developer roles, backend interviews, and Core Java revision.

👉 Like, share & subscribe for more real interview questions and Java deep dives!

#Java #JavaInterview #JPMorganChase #BackendEngineering #CoreJava #JavaDeveloper #Multithreading #CollectionsFramework #TechExplained