Welcome to the Data Types,Variables and Arrays MCQs Page

Dive deep into the fascinating world of Data Types,Variables and Arrays with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Data Types,Variables and Arrays, a crucial aspect of Java Programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Data Types,Variables and Arrays, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Java Programming.

Check out the MCQs below to embark on an enriching journey through Data Types,Variables and Arrays. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Java Programming.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Data Types,Variables and Arrays. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Data Types,Variables and Arrays MCQs | Page 8 of 32

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Q71.

How to format date from one form to another?

SimpleDateFormat

DateFormat

SimpleFormat

DateConverter

Discuss

Answer: (a).SimpleDateFormat

Q72.

How to convert Date object to String?

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-mm-dd");
sdf.parse(new Date());

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-mm-dd");
sdf.format(new Date());

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-mm-dd");
new Date().parse();

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-mm-dd");
new Date().format();

Discuss

Answer: (b).SimpleDateFormat sdf = new SimpleDateFormat("yyyy-mm-dd");
sdf.format(new Date());

Q73.

How to convert a String to a Date object?

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-mm-dd");
sdf.parse(new Date());

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-mm-dd");
sdf.format(new Date());

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-mm-dd");
new Date().parse();

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-mm-dd");
new Date().format();

Discuss

Answer: (a).SimpleDateFormat sdf = new SimpleDateFormat("yyyy-mm-dd");
sdf.parse(new Date());

Q74.

Is SimpleDateFormat thread safe?

True

False

May be

Can't say

Discuss

Answer: (b).False

Q75.

How to identify if a timezone is eligible for DayLight Saving?

useDaylightTime() of Time class

useDaylightTime() of Date class

useDaylightTime() of TimeZone class

useDaylightTime() of DateTime class

Discuss

Answer: (c).useDaylightTime() of TimeZone class

Q76.

What is the replacement of joda time library in java 8?

java.time (JSR-310)

java.date (JSR-310)

java.joda

java.jodaTime

Discuss

Answer: (a).java.time (JSR-310)

Q77.

How is Date stored in database?

java.sql.Date

java.util.Date

java.sql.DateTime

java.util.DateTime

Discuss

Answer: (a).java.sql.Date

Q78.

What does LocalTime represent?

Date without time

Time without Date

Date and Time

Date and Time with timezone

Discuss

Answer: (b).Time without Date

Q79.

How to get difference between two dates?

long diffInMilli = java.time.Duration.between(dateTime1, dateTime2).toMillis();

long diffInMilli = java.time.difference(dateTime1, dateTime2).toMillis();

Date diffInMilli = java.time.Duration.between(dateTime1, dateTime2).toMillis();

Time diffInMilli = java.time.Duration.between(dateTime1, dateTime2).toMillis();

Discuss

Answer: (a).long diffInMilli = java.time.Duration.between(dateTime1, dateTime2).toMillis();

Q80.

How to get UTC time?

Time.getUTC();

Date.getUTC();

Instant.now();

TimeZone.getUTC();

Discuss

Answer: (c).Instant.now();

Page 8 of 32

Welcome to the Data Types,Variables and Arrays MCQs Page

Data Types,Variables and Arrays MCQs | Page 8 of 32

Explore more Topics under Java Programming

Language Fundamentals

Operators and Control Statements

Classes and Methods

Inheritance

String Handling

java lang and java io

Serialization and Networking

java util

Exception Handling in Java

Multithreading

IO and Applets

Event Handling

Interfaces and Packages

Session Management,JSP and Servlet

Miscellaneous Topics in Java

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