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Tuesday, 3 October 2017

CSE406 : Advanced Java 8 MCQ Questions for Mid Term and End Term Exam - JDBC MCQ Questions, Interface MCQ Questions

Java 8 is a revolutionary release of the world's #1 development platform. It includes a huge upgrade to the Java programming model and a coordinated evolution of the JVM, Java language, and libraries.

1. Lambdas introduced in Java 8 allow us to treat -
a.Data as code
b.Code as data
c.none
d.all

2. The newly introduced Streams API is available in which package of java 8:
a.java.io.streams
b.java.io.stream
c.java.util.streams
d.java.util.stream

3. Which class can be used Instead of System.getCurrentTimeMillis() to get a date and time in Java 8 -
a.Clock
b.Date
c.Time
d.Timer

4. Lambda expressions in java 8 are based on
a.Procedural programming
b.Functional programming
c.Data programming
d.All

5. How many methods are there in functional interface in Java 8?
a.0
b.1
c.2
d.3

6. In Java 8 Interfaces, methods can be:
a.default
b.abstract
c.all
d.none

7. The Java 8 API with a sequence of elements which of these supports sequential and parallel aggregate operations -
a.Hadoop
b.Streams
c.SequenceProgramming
d.Big-data

8.Stream operations in java 8 can be divided into
a.Terminal types
b.Intermediate types
c.All
d.None

9. Which package contains Date/Time (JSR 310) API in Java 8 -
a.java.time
b.java.util.time
c.java.timedate
d.java.util.calendar

10. Nashorn the new JavaScript engine is an implementation of -
a.javax.engine.Engine
b.javax.script.Engine
c.javax.javaScript.Engine
d.javax.script.ScriptEngine

11. Which is new command line tool for the Nashhorn JavaScript engine in java 8 -
a.jcs
b.jfs
c.jjs
d.jss

12. Which of these should be used to show package-level and class-level dependencies of Class files in Java 8
a.dep
b.ideps
c.jdep
d.jdeps

13. Predicate is in which package in Java 8
a.java.util.predicate
b.java.util.object
c.java.util.objects
d.java.util.predict

14. Which of these represents a process that accepts one argument and produces a result in Java 8
a.Function
b.Process
c.Method
d.JavaFunctions

15. In java 8 Function is ?
a.Class
b.Interface
c.Lambda Expression
d.Object

16. PermGen space has been replaced with which of these in Java 8 -
a.PermSpace
b.PermSpaceGen
c.Metaspace
d.MetaGenSpace

17. What can help us in avoiding NullPointeExceptions and null checks in java 8 -
a.Optional
b.Required
c.NotNull
d.NotRequired

18. Code before Java 8 essentially used to be -
a.Declarative
b.Imperative
c.Subjective
d.None 

19. In java 8, R apply(T t) is a method of-
a.Function
b.Process
c.Predicate
d.None 

20. What is Predicate in Java 8 -
a.method
b.class
c.Interface
d.Framework

21. How sorting speed has been improved significantly on multi-core machines by using -
a.Arrays.parallelSort
b.Arrays.sort
c.Collection.parallelSort
d.Arrays.sortParallelly

22. Which is aggregate operation in Java 8
a.filter
b.map
c.forEach
d.All

23. Example of functional interfaces in Java 8 -
a.java.util.concurrent.Callable
b.java.lang.Runnable
c.All
d.None

24. Which method can be used to check null on an Optional variable in Java 8
a.isPresent()
b.isNullable()
c.isPresentable()
d.isNotNull

25. We need to override which Predicate method in Java 8 -
a.predict(T t)
b.predictable(T t)
c.testable(T t)
d.test(T t)

Correct answers

1) b     2) d     3) a     4) b     5) b     6) c     7) b     8) c     9) a     10) d     11) c     12) d     13) b     14) a     15) b     16) c     17) a     18) b     19) a     20) c     21) a     22) d     23) c     24) a     25) d

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