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Welcome to the java util MCQs Page

Dive deep into the fascinating world of java util with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of java util, a crucial aspect of Java Programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of java util, 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 java util. 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 java util. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

java util MCQs | Page 13 of 18

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Q121.
What is the range of numbers returned by Math.random() method?

a.

-1.0 to 1.0

b.

-1 to 1

c.

0 to 100

d.

0.0 to 1.0

Discuss
Answer: (d).0.0 to 1.0
Q122.
How many bits are used for generating random numbers?

a.

32

b.

64

c.

48

d.

8

Discuss
Answer: (c).48
Q123.
What would be the output of following code snippet?

int a = random.nextInt(15) + 1;

a.

Random number between 1 to 15, including 1 and 15

b.

Random number between 1 to 15, excluding 15

c.

Random number between 1 to 15, excluding 1

d.

Random number between 1 to 15, excluding 1 and 15

Discuss
Answer: (a).Random number between 1 to 15, including 1 and 15
Q124.
What would be the output of following code snippet?

int a = random.nextInt(7) + 4;

a.

Random number between 4 to 7, including 4 and 7

b.

Random number between 4 to 7, excluding 4 and 7

c.

Random number between 4 to 10, excluding 4 and 10

d.

Random number between 4 to 10, including 4 and 10

Discuss
Answer: (d).Random number between 4 to 10, including 4 and 10
Q125.
Math.random() guarantees uniqueness?

a.

True

b.

False

c.

May be

d.

Can't say

Discuss
Answer: (b).False
Q126.
What is the signature of Math.random() method?

a.

public static double random()

b.

public void double random()

c.

public static int random()

d.

public void int random()

Discuss
Answer: (a).public static double random()
Q127.
Which of these class produce objects with respect to geographical locations?

a.

TimeZone

b.

Locale

c.

Date

d.

SimpleTimeZone

Discuss
Answer: (b).Locale
Q128.
Which of these methods is not a Locale class?

a.

UK

b.

US

c.

INDIA

d.

KOREA

Discuss
Answer: (c).INDIA
Q129.
Which of these class can generate pseudorandom numbers?

a.

Locale

b.

Rand

c.

Random

d.

None of the mentioned

Discuss
Answer: (c).Random
Q130.
Which of these method of Locale class can be used to obtain country of operation?

a.

getCountry()

b.

whichCountry()

c.

DisplayCountry()

d.

getDisplayCountry()

Discuss
Answer: (d).getDisplayCountry()
Page 13 of 18

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