Java Scenario-Based Questions

1. A client reports that the web application you developed is running slowly during peak hours. How would you approach diagnosing and resolving the performance issues?

2. You need to integrate a new third-party API into an existing Java application, but the API documentation is incomplete, and you encounter several discrepancies. What steps would you take to successfully implement the integration?

3. During a code review, a fellow developer introduces a complex new feature that significantly increases the codebase's complexity. How would you assess the trade-offs involved and communicate your concerns effectively?

4. A critical bug is found in production right before a major release. The bug causes data loss under specific conditions. What is your plan for fixing the bug while minimizing impact on the release timeline?

5. You're working on a team project that requires collaboration with remote developers in different time zones. What strategies would you employ to facilitate effective communication and code integration?

6. A long-running Java application is consuming an increasing amount of memory, leading to performance degradation. How would you go about diagnosing and addressing potential memory leaks?

7. You are tasked with migrating a legacy Java application to a microservices architecture. What steps would you take to ensure a smooth transition while maintaining functionality?

8. Your team is considering adopting a new Java framework that promises improved performance. However, some team members are resistant due to the learning curve. How would you approach this situation to facilitate team buy-in?

9. A client has requested a significant change to a feature you recently delivered, which is outside the original scope and could impact the overall project deadline. How would you handle this request diplomatically while managing expectations?

10. During the development of a new feature, you discover that the current application design might not accommodate the required changes easily. How would you evaluate whether to refactor the existing code or implement a workaround?