Primitive Data Types
Primitive types are the basic data types serve as the building blocks of data manipulation in any programming language including Java.
In a programming language, a variable has a type such as Integer, String, Decimal, … whether that programming language is a Static Typing such as C/C++ and Java or Dynamic Typing like PHP, javascript and Python.
In Java like other programming languages we have built-in primitive data types. A primitive date type is a basic data type provided by a programming language as a basic building block.
Here is the list of primitive date types in Java:
| Category | Types | Size (bits) | Minimum Value | Maximum Value | Precision |
| Integer | |||||
| byte | 8 | -128 | 127 | From +127 to -128 |
|
| char | 16 | 0 | 216-1 | All Unicode characters | |
| short | 16 | -215 | 215-1 | From +32,767 to -32,768 |
|
| int | 32 | -231 | 231 | From +2,147,483,647 to -2,147,483,648 | |
| Floating Point |
|||||
| long | 64 | -263 | 263 | From +9,223,372,036,854,775,807 to -9,223,372,036,854,775,808 |
|
| float | 32 | -2149 | (2-2-23)·2127 | From 3.402,823,5 E+38 to 1.4 E-45 | |
| double | 64 | -21074 | (2-2-52)·21023 | From 1.797,693,134,862,315,7 E+308 to 4.9 E-324 |
|
| Other | |||||
| boolean | — | — | — | false, true | |
| void | — | — | — | — |
I created couple of samples in
https://github.com/myjavacoretutorial/primitive-types.git to play with each type.
Here your can find a brief description and sample for each Java primitive type: