Which of the following is not a valid way to declare an integer variable in Java?
A. int x = 42
B. int y = 3.14
C. int z = -10
D. int w = 0x1A
Answer: Option B
Solution(By Examveda Team)
The correct answer is Option B: int y = 3.14.In Java, when declaring an integer variable, you should assign it an integer value without a decimal point. Option B attempts to assign a double value (3.14) to an int variable, which is not a valid conversion in Java without explicit type casting.
Here's the breakdown:
Option A: int x = 42 - This is a valid way to declare an integer variable in Java, where x is assigned the integer value 42.
Option B: int y = 3.14 - This is not a valid way to declare an integer variable in Java because it attempts to assign a double value (3.14) to an int variable without type casting.
Option C: int z = -10 - This is a valid way to declare an integer variable in Java, where z is assigned the integer value -10.
Option D: int w = 0x1A - This is a valid way to declare an integer variable in Java using hexadecimal notation. w is assigned the integer value 26 in decimal notation.
So, among the provided options, Option B is not a valid way to declare an integer variable in Java because it attempts to assign a double value to an int variable.
Related Questions on Data Types and Variables
What is the maximum value that can be stored in a byte variable in Java?
A. 127
B. 255
C. 32767
D. 64
What is the default value of an int variable in Java if it's not explicitly initialized?
A. 0
B. 1
C. -1
D. Null
Which of the following is not a valid identifier for a Java variable?
A. my_var
B. _myVar
C. 3rdVar
D. $var
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