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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.

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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?

a.

SimpleDateFormat

b.

DateFormat

c.

SimpleFormat

d.

DateConverter

Discuss
Answer: (a).SimpleDateFormat
Q72.
How to convert Date object to String?

a.

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

b.

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

c.

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

d.

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?

a.

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

b.

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

c.

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

d.

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?

a.

True

b.

False

c.

May be

d.

Can't say

Discuss
Answer: (b).False
Q75.
How to identify if a timezone is eligible for DayLight Saving?

a.

useDaylightTime() of Time class

b.

useDaylightTime() of Date class

c.

useDaylightTime() of TimeZone class

d.

useDaylightTime() of DateTime class

Discuss
Answer: (c).useDaylightTime() of TimeZone class
Q76.
What is the replacement of joda time library in java 8?

a.

java.time (JSR-310)

b.

java.date (JSR-310)

c.

java.joda

d.

java.jodaTime

Discuss
Answer: (a).java.time (JSR-310)
Q77.
How is Date stored in database?

a.

java.sql.Date

b.

java.util.Date

c.

java.sql.DateTime

d.

java.util.DateTime

Discuss
Answer: (a).java.sql.Date
Q78.
What does LocalTime represent?

a.

Date without time

b.

Time without Date

c.

Date and Time

d.

Date and Time with timezone

Discuss
Answer: (b).Time without Date
Q79.
How to get difference between two dates?

a.

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

b.

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

c.

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

d.

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?

a.

Time.getUTC();

b.

Date.getUTC();

c.

Instant.now();

d.

TimeZone.getUTC();

Discuss
Answer: (c).Instant.now();
Page 8 of 32

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