Most Frequently Asked Core-Java Interview Question Answer   - (15)


1 .   What are the important features of Java 9 release?

 

2 .   What are the important features of Java 8 release?

 

3 .    Name some OOPS Concepts in Java?

 

4 .   What is try-with-resources in java?

 

5 .   What is Java Reflection API? Why it's so important to have?

 

6 .    What is the benefit of Composition over Inheritance?

 

7 .   What are different types of classloaders?

 

8 .   What are Collection related features in Java 8?

 

9 .     Why Collection doesn't extend Cloneable and Serializable interfaces?

 

10 .   What is difference between Enumeration and Iterator interface?

 

11 .   What is different between Iterator and ListIterator?

 

12 .    What do you understand by iterator fail-fast property?

 

13 .   What is difference between fail-fast and fail-safe?

 

14 .   What is the importance of hashCode() and equals() methods?

 

15 .     What is Comparable and Comparator interface?