Java has 8 basic data types (primitive data types)

Java has 8 basic data types, also known as primitive data types. They are divided into 4 groups:

1. Integers: Used to store whole numbers, without decimal points.

byte: Takes up 1 byte of memory, stores integers from -128 to 127.
short: Takes up 2 bytes of memory, stores integers from -32,768 to 32,767.
int: Takes up 4 bytes of memory, stores integers from -2,147,483,648 to 2,147,483,647. This is the most commonly used integer data type.
long: Takes up 8 bytes of memory, stores integers from -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807.

2. Floating-Point Numbers: Used to store numbers with decimal points.

float: Takes up 4 bytes of memory, stores single-precision floating-point numbers.
double: Takes up 8 bytes of memory, stores double-precision floating-point numbers. This is the most commonly used floating-point data type.

3. Characters:

4. Boolean:

Summary of basic data types in Java:

Data Type	Size (bytes)	Range of Values	Default Value
byte	1	-128 to 127	0
short	2	-32,768 to 32,767	0
int	4	-2,147,483,648 to 2,147,483,647	0
long	8	-9,223,372,036,854,775,808 to 9,223,372,036,854,775,807	0L
float	4	±3.4028235E+38	0.0f
double	8	±1.7976931348623157E+308	0.0d
char	2	'\u0000' to '\uffff' (0 to 65,535)	'\u0000'
boolean	1 bit	true or false	false

Note:

When declaring a variable with the long data type, you need to add the letter L at the end of the value. For example: long myLong = 10000000L;
When declaring a variable with the float data type, you need to add the letter f at the end of the value. For example: float myFloat = 3.14f;

Understanding these basic data types is an important first step in learning Java programming

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