In a method heading, what must be included if the method returns no value?

In a method heading, if the method is designed to return no value, it must include "void" as the return type. This keyword explicitly indicates that the method does not return any data to the caller.

When you declare a method with a return type of void, you communicate to anyone reading the code that no value will be produced when the method is executed. For instance, if you were to define a method meant to print a message to the console, it would not return any information to the calling context, making void the appropriate choice for its return type.

Other elements such as a return statement or parameters relate to how the method operates or what inputs it takes, but they do not fulfill the requirement of denoting a method that returns no value. The name of the calling object or numeric parameters are also unrelated to the method's return type.