Learn the Visitor Design Pattern

Visitor is a behavioral design pattern that lets you separate algorithms from the objects on which they operate.

Visitor Design Pattern

UML Class Diagram

Not familiar with UML Class Diagram? I have written a detailed post on the UML Class diagram.

Implementation steps

Source Code Implementation

// Output
Drawing Dot at (10,20)
Drawing Rectangle at (100,0)
Drawing Circle at (234,20)
Exporting Dot ID and coordinates: ID: 63741, x:10, y:20
Exporting Dot ID and coordinates: ID: 29577, x:100, y:0
Exporting Dot ID and coordinates: ID: 2254, x:234, y:20

When To Apply Visitor Design Pattern

Pros of Visitor Design Pattern

References

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