Quiz

Java From Beginner To Advanced

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Quiz

Question 1

Which of the following is a valid variable declaration in Java?

A

int 1number;

B

double _salary;

C

char first-name;

D

boolean isValid!;

Question 2

What is the default value of a boolean variable in Java?

A

false

B

true

C

0

D

null

Question 3

What will be the output of the following Java code?

int a = 5;
double b = a;
System.out.println(b);

A

5

B

5.00

C

5.0

D

Error

Question 4

What will be the output of the following Java code?

int x = 10;
int y = 3;
double result = x / y;
System.out.println(result);

A

3.333333

B

3.3333333333333335

C

Error

D

3.0

Question 5

What is the size of a long data type in Java?

A

16 bits

B

32 bits

C

64 bits

D

8 bits

.....

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