Groovy Data Types Classification

The data types supported by Groovy include primitive and reference types. Primitive types encompass integers, floating-point numbers, booleans, and characters, while reference types include strings, lists, maps, ranges, and others.

Below are the data types supported by Groovy along with their examples:

Integer: The integer data type includes byte, short, int, and long. Examples:

byte b = 127
short s = 32767
int i = 2147483647
long l = 9223372036854775807L

Floating-point: The floating-point data type includes float and double. Examples:
```
float f = 3.14F
double d = 3.141592653589793
```
Boolean: The boolean data type has only two possible values, namely true and false. Example:
```
boolean flag = true
```
Character: Character data types are enclosed in single quotes. Example:
```
char c = 'A'
```

String: String types are enclosed in double quotes or triple double quotes. Examples:

String str1 = "Hello, world!"
String str2 = '''Groovy is awesome!
It supports multi-line string.'''

List: List types are enclosed in square brackets. Example:
```
List list = [1, 2, 3, 4, 5]
```
Map: Map types are enclosed in curly braces. Example:
```
Map map = [name: 'John', age: 30]
```
Range: Range types are connected using ... Example:
```
Range range = 1..10
```