Element Fleet Management Interview Question

1. What is a JSON and how does it work 2. Difference between Comparable & Comparator 3. Types of functions in HTTP 4. What is JPA 5. Authentication mechanisms I have worked on and entire process 6. Singleton design pattern 7. What is a memory leak, how to prevent it 8. How does garbage collector work in Java 9. How applications implement globalization and localization 10. Write test scenarios for a specific function 11. When does garbage collection start in Java, garbage collection parameters, etc 12. How to send parameters from UI apart from request parameters 13. Lambda expressions and streams