State diagrams are powerful tools for modeling the behavior of systems that have distinct states and transitions between them.

What are State Diagrams?

A state diagram shows the different states an object can be in and the transitions between those states.

Key Components

• States: The distinct conditions of a system
• Transitions: Changes between states
• Events: Triggers for transitions
• Actions: Activities performed during transitions

When to Use State Diagrams

State diagrams are ideal for modeling systems with complex behavior, such as order processing, user authentication, and workflow systems.