☕ Java Variables

Variables in Java are containers for storing data values. Each variable must be declared with a data type before it’s used.

📖 Basic Variable Declaration

Here's how you declare and assign values to variables in Java:

🎛️ Data Types

Common primitive data types in Java:

• int — whole numbers
• double — decimal numbers
• char — single characters
• boolean — true or false

⚡ Variable Rules

• Names must start with a letter, $, or _
• No spaces or special symbols like # or %
• Case-sensitive (e.g., Age and age are different)