How many primitive data types does Java support?

• A. 6
• B. 7
• C. 8
• D. 9

Answer: (C)

Java supports a total of eight primitive data types. These primitive data types are the building blocks of data manipulation in Java and include:

1. byte: an 8-bit signed integer.

2. short: a 16-bit signed integer.

3. int: a 32-bit signed integer.

4. long: a 64-bit signed integer.

5. float: a single-precise 32-bit floating-point.

6. double: a double-precise 64-bit floating-point.

7. char: a single 16-bit Unicode character.

8. boolean: represents one of two values: true or false.

These types are distinct because they represent simple values and are not objects. They are used to define variables with a specific kind of data, thus optimizing memory usage and enhancing performance. Each type has a specific range and size, which allows Java to handle different kinds of data effectively.

Understanding the number and nature of these primitive data types is fundamental for programming in Java, as they are frequently used in variable declarations and method parameters.