What are the primitive data types in Java?

In Java, there are eight primitive data types:

1. byte: 8-bit signed integer
2. short: 16-bit signed integer
3. int: 32-bit signed integer
4. long: 64-bit signed integer
5. float: 32-bit floating point
6. double: 64-bit floating point
7. char: 16-bit Unicode character
8. boolean: Represents one of two values: true or false

These data types are used to store simple values and are not objects.