eTeki Senior Developer interview questions

Eteki questions: 1) Tell me about yourself. 1) How do you handle multiple connections in JDBC? 2) What is comparator and comparable? Write code for comparable and comparator. 3) What is Actuator in Spring boot? 4) what are the features of Spring boot? 5) What is radix search? 6) What searching algo's do you know? 7) Which type of pattern is Singleton design pattern? 8) Which type of desgin patterns have you worked on? 9) What is differnece between merge sort and quick sort? 10) How did you implement spring security in your recnt project? 11) What is security context in spring security? 12) What is an inner class, a nested call and an anonymous inner class. 13) What are the different type of JDBC drivers? 14) What is abstraction and how is it different from encapsulation?