Mastering Java: The Ultimate Quiz for 'Thinking in Java'

Which pattern involves an object passing itself as an argument to another method to decide the method's action?

1. Visitor Pattern

2. Singleton Pattern

3. Factory Method Pattern

4. Command Pattern

The correct answer is: Visitor Pattern

The Visitor Pattern is the correct answer because it allows for an object to pass itself as an argument to another method for the purpose of defining the method's behavior. The other options are incorrect because the Singleton Pattern does not involve passing an object as an argument, the Factory Method Pattern creates objects without passing itself as an argument, and the Command Pattern uses a separate class to encapsulate a method's behavior.