As the name suggests, data-type specifies the type of the data present in the variable. Variables must be declared with a data-type. 

Groovy offers various built-in data types:

| Data type | Description | Example|
|----|----|----|
| int| used to represent whole numbers| int x = 99999|
|short| used to represent whole numbers| short x = 999 |
|long| used to represent whole numbers| long x = 99999999999L |
|float| used to represent fractional numbers| float x = 22.79f|
|double| used to represent fractional numbers|double x = 99.99d|
|char|used to represent a single character|char grade = 'A'|
|boolean| used to represent Boolean data either true or false| boolean isAvailable = true|
|byte| Used to represent a byte value| byte x = 99 |
|string | used to represent a series of characters| string msg = "Happy learning!" |

### Examples
```java

int int_var = 99999 // integer variable
println int_var;

short short_var = 999 // short variable
println short_var;

long long_var = 99999999999L // long variable
println long_var;

float float_var = 22.79f // float variable
println float_var;

double double_var = 99.99d // double variable
println double_var;

char char_var = 'A' // char variable
println char_var;

boolean isAvailable = true // boolean variable
println isAvailable;

byte byte_var  = 99 // byte variable
println byte_var;

String msg = "Happy learning!" // String variable
println msg;
```
### Check result [here](https://onecompiler.com/groovy/3vmpufv5d)

#### Note:           

`;` is optional in groovy


Introduction to Groovy

Data Types

Variables

Operators

Basics

Conditional Statements

Loops

Control Statements

Lists

Maps

Strings

Methods

OOP Principles

OOPS in Groovy

Closures

Groovy Closures

Regular expressions

Data type	Description	Example
int	used to represent whole numbers	int x = 99999
short	used to represent whole numbers	short x = 999
long	used to represent whole numbers	long x = 99999999999L
float	used to represent fractional numbers	float x = 22.79f
double	used to represent fractional numbers	double x = 99.99d
char	used to represent a single character	char grade = 'A'
boolean	used to represent Boolean data either true or false	boolean isAvailable = true
byte	Used to represent a byte value	byte x = 99
string	used to represent a series of characters	string msg = "Happy learning!"

Data Types

Examples

Check result here

Note: