NIIT Technologies Java Interview Questions

#1 Question

What is the difference between an interface and an abstract class?

   

#2 Question

Explain What is Spring MVC?

#3 Question

What is abstraction?

#4 Question

What is the difference between left and right outer join?

#5 Question

Explain how HashMap works?

#6 Question

Write a factorial program using recursion in Java?

#7 Question

What is Operator overloading. Is it is supported in java?

#8 Question

How to avoid memory leak in JAVA?

#9 Question

What is EnumSet?

#10 Question

How can we create a synchronized collection from given collection?

#11 Question

What is ceil and floor in Oracle?

#12 Question

What is Singleton design pattern?

#13 Question

What is Difference between equals and hashcode method?

#14 Question

Explain Dependency Injection and its types?

#15 Question

What is difference between String buffer and String builder ?

#16 Question

What is apply operator in sql?

#17 Question

What are 4 pillers of object orinted programming?

#18 Question

What are abstract functions? Why are they used?

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