
Understanding Java Variables and Types
Quiz
•
English
•
Professional Development
•
Practice Problem
•
Medium
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the default value of an int variable in Java?
1
0
-1
null
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a valid declaration of a float variable?
float myVariable = '3.14';
float myVariable : 3.14;
float myVariable = 3.14;
float myVariable = 3,14;
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What data type is used to store a single character in Java?
boolean
int
char
string
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of implicit casting from int to double?
The result is a double representation of the integer.
The result is an integer representation of the double.
The result is a string representation of the integer.
The result is a boolean value indicating success.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which keyword is used to define a constant variable in Java?
static
final
immutable
constant
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the size of a char data type in Java?
1 byte
2 bytes
4 bytes
8 bytes
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is an example of explicit casting?
(int) 5.5
(double) 5
float(5.5)
5.5 as int
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