The basic types are byte, short, int, long, float, double, char, and boolean.

1. byte: used to process byte-level data such as files and network transmissions

2. short: can be used to save memory space requirements

3. int: the most widely used integer type

4. long: used to handle integer calculations that require larger values

5. float: used for scientific calculations and high precision Calculation scenarios

6. Double: the most widely used floating point type

7. char: can represent any character

8. boolean: used for conditions Judgments and Boolean operations.

9. Java is an object-oriented computer programming language that is widely used in software development in various fields. In Java, data type is an important element that determines the type and operation of variables. Java provides some basic data types that allow developers to effectively handle various data. Java's basic data types are divided into two categories: primitive data types and reference data types. Primitive data types are Java's built-in basic data types, including integers, floating point numbers, characters, and Boolean values. Reference data types are data types created by programmers based on their needs.