NIIT Technologies Java Interview Questions

  1. What is the difference between an interface and an abstract class?
  2. What are abstract functions? Why are they used?
  3. What are 4 pillers of object orinted programming?
  4. What is apply operator in sql?
  5. What is difference between String buffer and String builder ?
  6. Explain Dependency Injection and its types?
  7. Explain What is Spring MVC?
  8. What is Difference between equals and hashcode method?
  9. What is Singleton design pattern?
  10. What is ceil and floor in Oracle?
  11. How can we create a synchronized collection from given collection?
  12. What is EnumSet?
  13. How to avoid memory leak in JAVA?
  14. What is Operator overloading. Is it is supported in java?
NIIT Technologies Java Interview Questions
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