🎯 1. What Is UML?

UML (Unified Modeling Language) is a visual way to design software before writing code.

Think of UML as:

• a blueprint
• a map
• a visual explanation of how classes work together

Most important diagram for Java developers:

👉 Class Diagram

⭐ 2. What Does a UML Class Diagram Show?

A class diagram tells you:

✔ Class name

✔ Attributes (variables)

✔ Methods (functions)

✔ Relationships between classes

• Inheritance
• Composition
• Aggregation
• Association