🪜 Step-by-Step (continued)

Step 3: Add inheritance arrows

Ask: "Is any class a specific type of another?" Zombie IS A Mob. Skeleton IS A Mob. Draw hollow triangle arrows from children to parent.

Step 4: Add associations with multiplicity

Ask: "Does any class use or have another?" A Mob carries 0..1 Weapons (some mobs are unarmed). A Weapon is held by 0..1 Mobs. Draw a plain line with multiplicity numbers.

Complete Diagram

🎯 Reading the Diagram

Zombie and Skeleton inherit from Mob (hollow triangle arrows point up to Mob). A Mob carries 0..1 Weapons (association line). Children get all of Mob's attributes and methods, plus their own.