Mphasis JAVA Interview Questions | Senior Java Developer | Java Interview Questions and Answers

🔥 Java Interview Questions Asked at Mphasis Role: Senior Java Developer Month: December 2025 In this video, we discuss real Java interview questions asked at Mphasis for a Senior Java Developer role. Each question is explained with an interview-oriented approach, focusing on clarity, JVM-level understanding, and practical reasoning. This video is ideal for Java developers preparing for backend / senior-level interviews in 2025. ⏱️ Timestamps 00:00 – Introduction (Mphasis | Senior Java Developer Interview) 01:18 – What are Virtual Threads in Java 21 and how are they different from traditional threads? 09:45 – How do Java Records improve DTO handling? 15:07 – Difference between Optional.get(), orElse(), and orElseThrow() 21:30 – How does ConcurrentHashMap achieve thread safety internally? 27:10 – Switch expressions vs switch statements in Java 35:05 – Fork/Join framework and its advantages 44:23 – Pattern matching for instanceof – why it simplifies code 49:50 – How to implement immutability in Java classes 53:45 – Benefits of Streams and functional programming 1:02:14 – How Java handles memory management for unreachable objects 🎯 What you’ll learn • How interviewers expect answers at senior level • JVM and performance-oriented explanations • Common follow-up questions and traps • Practical examples instead of textbook definitions 👍 If this video helps you • Like the video • Subscribe for more real interview questions • Comment which company’s interview questions you want next 🔖 Hashtags #JavaInterview #SeniorJavaDeveloper #Mphasis #Java21 #CoreJava #BackendDeveloper #JVM #SpringBoot #ConcurrentHashMap #JavaStreams #ForkJoin #GarbageCollection #SoftwareEngineering #TechInterviews