Why is method overloading not possible by changing the return type of method only?

Overloading is the mechanism of binding the method call with the method body dynamically based on the parameters passed to the method call. ... It is not possible to decide to execute which method based on the return type, therefore, overloading is not possible just by changing the return type of the method.

Can we change only return type while method overloading?

No, you cannot overload a method based on different return type but same argument type and number in java.

Why return type is not considered in method overloading in java?

As said in previous answers, java does not support method overloading with different return type and same arguments. This is because, it has to determine which method to use at the compile time itself. To remove the ambiguity, they designed the method overloading technique like this.

Does return type matter in method overloading?

Return type does not matter while overloading a method. We just need to ensure there is no ambiguity! The only way Java can know which method to call is by differentiating the types of the argument list.

Can we change return type in method overriding?

Yes. It is possible for overridden methods to have different return type .

Method Overloading in Java

Which is incorrect about method overloading?

4. Which is incorrect statement regarding overloading? Return type is not considered in overloading.

Why return type is not in function overloading in C++?

The return type of a function has no effect on function overloading, therefore the same function signature with different return type will not be overloaded. Example: if there are two functions: int sum() and float sum(), these two will generate a compile-time error as function overloading is not possible here.

Why overloading is not possible in C?

Function overloading is a feature of Object Oriented programming languages like Java and C++. As we know, C is not an Object Oriented programming language. Therefore, C does not support function overloading.

Can constructor have a return type?

Constructors do not return any type while method(s) have the return type or void if does not return any value. Constructors are called only once at the time of Object creation while method(s) can be called any number of times.

What are the differences between method overloading and method overriding?

In method overloading, methods must have the same name and different signatures. In method overriding, methods must have the same name and same signature.

What will be the return type of overriding methods will it be same or varies?

When we override a parent class method, the name, argument types, and return type of the overriding method in child class has to be exactly the same as that of the parent class method. The overriding method was said to be invariant with respect to return type.

What is the return type of method overriding in Java?

Covariant return type refers to return type of an overriding method. It allows to narrow down return type of an overridden method without any need to cast the type or check the return type. Covariant return type works only for non-primitive return types.

Can constructor have void?

Note that the constructor name must match the class name, and it cannot have a return type (like void ). Also note that the constructor is called when the object is created.

Why main method is declared as static?

The main() method is static so that JVM can invoke it without instantiating the class. This also saves the unnecessary wastage of memory which would have been used by the object declared only for calling the main() method by the JVM.

Can constructor be private?

Yes, we can declare a constructor as private. If we declare a constructor as private we are not able to create an object of a class. We can use this private constructor in the Singleton Design Pattern.

Why is overloading not possible in procedural programming?

Function overloading was introduced in C++, so it is not available in C. Polymorphism is an OOP concept, but C is not object-oriented.

Is overloading possible in procedural programming?

If a class has multiple methods having same name but different in parameters, it is known as Method Overloading. If we have to perform only one operation, having same name of the methods increases the readability of the program.

Which operator can not be overloaded?

Explanation: . (dot) operator cannot be overloaded therefore the program gives error.

What is function overloading which are the rules of function overloading Why return type is not considered in function overloading?

Function Overloading in C++

When a function name is overloaded with different jobs it is called Function Overloading. In Function Overloading “Function” name should be the same and the arguments should be different. Function overloading can be considered as an example of polymorphism feature in C++.

Can we override method with different return type C++?

To summarize, you can only override a virtual function using a different return type if the types are covariant. The types aren't covariant, the override is. No, only your interpretation of it is a bit idiosyncratic.

Which of the following are not true about method overloading?

Explanation: If two methods have same name, same parameters and have different return type, then this is not a valid method overloading example.

Which of the following are not true about method overloading in polymorphism?

Which among the following is not true for polymorphism? Explanation: It never increases function definition overhead, one way or another if you don't use polymorphism, you will use the definition in some other way, so it actually helps to write efficient codes.

Can constructor be static?

A static constructor is used to initialize any static data, or to perform a particular action that needs to be performed only once. It is called automatically before the first instance is created or any static members are referenced.

Is public void a constructor?

Constructor is not like any ordinary method or function, it has no return type, thus it does not return void. Constructors don't create objects.

Why constructor has no return type?

So the reason the constructor doesn't return a value is because it's not called directly by your code, it's called by the memory allocation and object initialization code in the runtime. Its return value (if it actually has one when compiled down to machine code) is opaque to the user - therefore, you can't specify it.