JSP 1 : Variables, Data Types, Operators

DATA TYPES & OPERATORS

DATA TYPES

A data type is a classification that specifies the type of data a variable can hold in a programming language

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Common Data types are:
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• Numbers
• Strings
• Booleans

Primitive Data types

• Primitive data types are data types that represents single values

• They are immutable hence values cannot be changed,however, you can reassign a new value to the variable holding the primitive data type

-They are stored by value meaning they are stored directly into a variable memory location

• Have a fixed size hence occupy a fixed amount size of memory therefore storage is in stacks

They include :

1. Numbers
2. strings
3. boolean

Examples

Non-Primitive Data types

Non-primitive data types are more complex and can hold multiple values

• They store multiple values.
• They are modifiable and dynamic.
• They use more memory and are slower than primitive types.
• They often require additional operations (e.g., accessing elements) They include:

Objects : Collection of keys and value pairs where keys are strings and values can be of any data type

Arrays : Ordered collections of elements that can be of any data type

Functions

Maps

Sets