1. What projects you have worked 2. Explain Abstract class and interface? How you implemented the project 3. Can we create an object in the interface 4. Features of Java 8 5. What is the functional interface 6. Types of annotations used in hibernate 7. SQL joins 8. What is the composite key? 9. Use of having clause 10. SQL query to fetch count of department based on department name 11. How to make class as immutable 12. Explain the final , finally and finalize 13. Syntax of hashmap 14. When we used arraylist and when we used linked list? Which is better for inserting the data? 15. Output of the following program String s = "Hello"; s.concat("world");