Salesforce Platform Developer Practice Exam

From which class does the Boolean type inherit?

1. Enum

2. Object

3. String

4. Class

The correct answer is: Object

The Boolean type in Salesforce, as well as in many programming languages, is a primitive data type that represents either true or false values. In the context of Salesforce and its Apex programming language, every primitive type, including Boolean, is derived from the Object class. This inheritance provides the Boolean type with the foundational capabilities that all objects in Apex possess. By inheriting from the Object class, Boolean can take advantage of methods and behaviors defined for all objects, such as the ability to be passed as a reference or returned by methods. While the Boolean type itself serves a specific purpose in logic and control flow, its relationship with the Object class allows it to integrate seamlessly into the broader object-oriented structure of Apex. Thus, recognizing that Boolean is a subtype of Object clarifies its role in the language and its behavior in various contexts, such as within collections or when interacting with methods. The other options do not relate directly to the inheritance structure of the Boolean type in Apex. For example, Enum is used for defining enumerated types, String represents a sequence of characters, and Class is a blueprint for creating objects but does not pertain specifically to primitive data types.