In Scala, literals are values that are directly written in the code without the need for computation or evaluation. There are various types of Scala literals which are:
Integer literals : These are used to represent integer values, such as 123 or -456.
Floating-point literals : These are used to represent floating-point values, such as 3.14159 or -2.5E-4.
Boolean literals : These are used to represent true or false values.
Character literals : These are used to represent a single character, enclosed in single quotes, such as 'a' or '\n'.
String literals : These are used to represent a sequence of characters, enclosed in double quotes, such as "Hello, world!".
Symbol literals : These represent a unique identifier preceded by a single quote, such as 'foo or 'bar.
Null literal : This means a null value, which indicates the absence of a value.
Unit literal : This represents the Unit type, which indicates the absence of a meaningful value. It is written as ().
