Why return type is not in function 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.

Why return type is not in method overloading?

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.

Does return type matter in function overloading in java?

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.

Is return type considered in function overloading?

The return type of a function does not create any effect on function overloading.

Why there is no return type in java?

Java requires that a method declare the data type of the value that it returns. If a method does not return a value, it must be declared to return void . However, the pop() method in the Stack class returns a reference data type: an object.

Java Overloading methods (Different return types) | Java Tutorial

Why constructor have 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.

Can a method have no return type?

Any method declared void doesn't return a value. It does not need to contain a return statement, but it may do so.

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++.

Does return type play any role while overloading a method justify?

Since return type of method doesn't matter while overloading a method.

Can we change return type while overriding in Java?

Java version 5.0 onwards it is possible to have different return types for an overriding method in the child class, but the child's return type should be a subtype of the parent's return type. The overriding method becomes variant with respect to return type.

Can we override static method in Java?

Static methods are bonded at compile time using static binding. Therefore, we cannot override static methods in Java.

Can we override private method in Java?

No, we cannot override private or static methods in Java. Private methods in Java are not visible to any other class which limits their scope to the class in which they are declared.

Can we overload the main () method?

Yes, we can overload the main method in Java, but When we execute the class JVM starts execution with public static void main(String[] args) method.

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

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.

What is difference between overriding and overloading?

What is Overloading and Overriding? When two or more methods in the same class have the same name but different parameters, it's called Overloading. When the method signature (name and parameters) are the same in the superclass and the child class, it's called Overriding.

What is difference between method overloading and method overriding in Java?

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

Which function Cannot overload?

Which function cannot be overloaded in C++ program? Static functions cannot be overloaded in C++ programming.

What is return type in polymorphism?

Edit: By return type polymorphism I mean overloading the function signature only in the return type. For example, C++ and Java only allow overloading in the type of the formal parameters, not in the return type.

What is return type in Java?

A return statement causes the program control to transfer back to the caller of a method. Every method in Java is declared with a return type and it is mandatory for all java methods. A return type may be a primitive type like int, float, double, a reference type or void type(returns nothing).

Can class be a return type of any method?

When a method uses a class name as its return type, such as pop does, the class of the type of the returned object must be either a subclass of or the exact class of the return type.

What is meaning of return type void?

In computer programming, when void is used as a function return type, it indicates that the function does not return a value. When void appears in a pointer declaration, it specifies that the pointer is universal. When used in a function's parameter list, void indicates that the function takes no parameters.

Can constructors have return types?

No, constructor does not have any return type in Java. Constructor looks like method but it is not. It does not have a return type and its name is same as the class name.

What happens if constructor has a return type?

Explanation: The constructor cannot have a return type. It should create and return new objects. Hence it would give a compilation error.

Why constructor is not static in Java?

Conclusion: The constructors in Java can not be static because if the constructors are marked as static, they can not be called from the child class; thus, the child class's object will not be created. The program will not be compiled and throw a compile-time error.

Can we have 2 main methods in Java?

From the above program, we can say that Java can have multiple main methods but with the concept of overloading. There should be only one main method with parameter as string[ ] arg.