Interview Question on Java 8


1. What is Java 8 ?

Ans: It is a major feature release of Java Programming Language.

2. What are the new features of the Java 8 ?

Ans:

a. Lambda expression
b. Method references
c. Default method
d. Stream API
e. Date Time API
f. Nashorn , Javascript Engine

3. What is Lambda expression ?

Ans: Adds functional processing capability to java

4. What is the use of the method references ?

Ans: Referencing functions by their names instead of invoking them directly

5. What is default method ?

Ans: Interface to have default method implementation.

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6. What is jdeps ?

Ans: It is a compiler tools which are used to figure out dependencies.

7. What is the use of the stream API ?

Ans: It is used to facilitate pipeline processing.

8. What is date time API ?

Ans: Improved date time API

9. What is Nashorn Javascript Engine ?

Ans: A java-based engine to execute javascript code.

10. What is the use of the sortusingjava8() method ?


Ans: Uses sort function with a lambda expression as parameter to get the sorting criteria.

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