What is one of the main functions of the Wrapper Class?

The main function of a Wrapper Class is to contain logic for reuse, making it a valuable object-oriented programming concept in Salesforce and other programming environments. Wrapper classes allow developers to encapsulate several related aspects into a single structure, enabling code modularity and reusability.

For instance, if you have a scenario where you need to process various data entities that share similar attributes, a wrapper class can be created to unify their representation. This reduces code duplication and improves maintainability, as any changes made to the wrapper class will automatically propagate to all instances where it is used.

Additionally, by containing methods within the wrapper class, developers can create reusable business logic that applies to the wrapped objects. This approach encourages cleaner and more organized code, simplifying tasks such as validation or processing of multiple records in bulk.

In contrast, handling UI elements, managing sessions, or focusing on database design are not primary functions of the wrapper class. Each of these areas pertains to different concerns within an application architecture and serves a distinct purpose outside the context of what a wrapper class is designed to do.