Which of the following is the correct way to declare a hexadecimal value in Java?
A. 0x1A
B. #1A
C. 1A
D. 0b1A
Answer: Option A
Solution(By Examveda Team)
The correct answer is Option A: 0x1A.In Java, the correct way to declare a hexadecimal value is by using the prefix 0x followed by the hexadecimal digits.
Here's the breakdown:
Option A: 0x1A - This is the correct way to declare a hexadecimal value in Java. The 0x prefix indicates that the following digits are in hexadecimal format.
Option B: #1A - This is not the correct way to declare a hexadecimal value in Java. Java uses 0x for hexadecimal notation, not #.
Option C: 1A - This is not a valid way to represent a hexadecimal value in Java. It lacks the 0x prefix.
Option D: 0b1A - This is not a valid hexadecimal representation in Java. The 0b prefix is used for binary representation, not hexadecimal.
So, the correct way to declare a hexadecimal value in Java is 0x1A.
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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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