Java Questions ----------------------- Difference between Method overloading and overriding Difference between Stack and Heap and follow up questions on garbage collection Major and Minor GC Pauses How does HashMap work ? Scenario : If there is a use case where multiple processes are using hashmap, what consideration would you make? Difference between checked and unchecked exceptions, when would you use each of that ? REST APIs ------------------- Difference between PUT and POST request How do you keep updating the leaderboard for the players ? How do you handle latency issues when your players are across different time zones ? The project that you’re most proud of ? The project that failed and you felt bad for it ?