java数据类型可分为两大类是什么(JAVA的数据类型分为()和()两类)

Introduction

Java is one of the most extensively used programming languages globally. In Java, data types allow us to store data with various values and characteristics. Data types in Java can be divided into two categories:

Primitive Data Types

Primitive data types in Java are pre-defined data types. Java has eight primitive data types, including:

1. byte: Used to store small integers from -128 to 127.
2. short: Used to store short integers from -32,768 to 32,767.
3. int: Used to store integers that range from -2,147,483,648 to 2,147,483,647.
4. long: Used to store long integers from -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807.
5. float: Used to store decimal values from 3.4e-038 to 3.4e+038 with six to seven decimal digits of precision.
6. double: Used to store decimal values from 1.7e-308 to 1.7e+308 with fifteen decimal digits of precision.
7. char: Used to store a single character or Unicode character starting from 0 to 65,535.
8. boolean: Used to store only two values: true or false.

Non-Primitive Data Types

Non-primitive or reference data types in Java are created by the programmer. These data types include:

1. Arrays: Used to store a collection of variables of the same primitive or reference data type under one name.
2. Class: A blueprint that defines a set of attributes and behaviors, which can be used to create objects.
3. Interface: Used to define a set of methods that a class must implement.
4. String: A sequence of characters that is a reference data type in Java. String objects are immutable, meaning that their values cannot be changed once assigned.

Conclusion

Java data types are essential in programming by allowing us to store data with various values and characteristics. We have two categories of data types in Java: primitive and non-primitive. Primitive data types are pre-defined data types and include eight types, while non-primitive data types are created by the programmer and include arrays, classes, interfaces, and strings.