Can you overload methods based solely on their return types?

• A. Yes, this is a standard practice in Java
• B. No, it causes ambiguity for the compiler
• C. Only for private methods
• D. Yes, if they share the same name

Answer: (B)

In Java, method overloading is based on the method's signature, which includes the method name and the parameter list (the number, order, and type of parameters). The return type alone does not constitute a unique signature for method overloading. As a result, if two methods differ only in their return types but have the same name and parameter types, the compiler will be unable to distinguish between them, leading to ambiguity.

For instance, if you have two methods defined as follows:

int calculate() {

return 1;

}

double calculate() {

return 2.0;

}

The compiler will not be able to determine which version of calculate() to invoke based solely on the return type. This ambiguity is why the concept of overloading on return types is not valid in Java; it necessitates parameters to create unique method signatures.

Thus, the assertion that you cannot overload methods based solely on their return types is accurate.