Check out our latest blog post for a cool quiz on Java Data Types. It’s a fantastic way to see how much you know and learn more in a fun way!
Java has 8 primitive data types: byte, short, int, long, float, double, char, and boolean. These types represent single values and are the foundation of Java programming, helping you manage numbers, characters, and true/false conditions in your code. Understanding these data types is crucial for efficient programming and handling data accurately in Java applications.
By tackling these MCQs, you’ll get a clearer picture of how Java’s data types work and why they’re important. Whether you’re studying for a test or brushing up on your Java skills, this quiz offers a fantastic chance to deepen your understanding. Ready to challenge yourself? Let’s jump into the world of Java Data Types and learn something new!
1. How many primitive data types are there in Java?
Answer:
Explanation:
Java has eight primitive data types: byte, short, int, long, float, double, boolean, and char.
2. What is the size of a 'byte' data type in Java?
Answer:
Explanation:
The 'byte' data type in Java is 1 byte in size and stores whole numbers from -128 to 127.
3. Which Java data type is used to store true or false values?
Answer:
Explanation:
The 'boolean' data type in Java is used to store true or false values.
4. What is the size of the 'int' data type in Java?
Answer:
Explanation:
The 'int' data type in Java has a size of 4 bytes and is used to store whole numbers.
5. Which of these is not a primitive data type in Java?
Answer:
Explanation:
'String' is a non-primitive data type in Java, whereas float, short, and byte are primitive data types.
6. What is the range of the 'short' data type in Java?
Answer:
Explanation:
The 'short' data type in Java can store whole numbers ranging from -32,768 to 32,767.
7. What is the size of a 'char' data type in Java?
Answer:
Explanation:
The 'char' data type in Java is 2 bytes in size and is used to store a single character or ASCII values.
8. Which Java data type is used for storing large whole numbers?
Answer:
Explanation:
The 'long' data type in Java is used to store large whole numbers and has a range much larger than 'int'.
9. What is the size of the 'double' data type in Java?
Answer:
Explanation:
The 'double' data type in Java is 8 bytes in size and is used to store fractional numbers with more precision.
10. Which data type would you choose to store a letter 'A' in Java?
Answer:
Explanation:
The 'char' data type is used in Java to store single characters like 'A'.
11. How many decimal digits can a 'float' data type store approximately?
Answer:
Explanation:
The 'float' data type in Java can store approximately 6 to 7 decimal digits.
12. What is the purpose of primitive data types in Java?
Answer:
Explanation:
Primitive data types in Java specify the size and type of variable values and do not have additional methods.