Interview

Welcome, aspiring Salesforce developers, to a crucial segment of your interview preparation journey. As someone who has recently navigated the intricacies of Salesforce interviews, I can attest that topics like Interface, Abstract Class, and Virtual Class in Apex are gems that frequently grace interview conversations.

In this article, we will explore some of the important future method related interview questions and answers.

Q.1: What is Future Method and Why it is used?
Ans: Future method is a form of asynchronous apex. It is run in separate thread when resources are available.It is used to run long running operations like external web service callouts or any task that can be completed in near future.We can only pass primitive data types, arrays of primitive data types, or collections of primitive data types as parameters. 

Batch apex is a critical topic in Salesforce interviews, as it pertains to handling large volumes of data efficiently. The performance of batch apex is essential to optimize bulk data processing. Here are some questions to help you clear your salesforce interviews.

An abstract class is a class that contains at least one abstract method, which is a method without a body (implementation). An abstract class cannot be instantiated on its own, but it can be inherited by other classes. When a class extends an abstract class, it must provide an implementation for all the abstract methods that are defined in the abstract class, otherwise, it should also be declared as an abstract class. There are a few other important points to consider when working with abstract classes:

An interface in object-oriented programming is a way to define a set of methods that a class should implement. It is like a blueprint that specifies what a class should be able to do, but does not provide any implementation details for those methods.

When you define an interface, you only provide method signatures or declarations, which specify the name of the method, the parameters it takes, and the return type. However, you do not provide any code for the method bodies. This means that an interface only contains empty method bodies, or “placeholders” for the actual code that will be provided by a class that implements the interface.