Can return type be different in method overriding?

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.

Do overridden methods have to have the same return type?

A subclass' overriding method should match its superclass or subclass' return type if the overriding method returns the same type. Underlining methods in subclasses should not override methods in the parent class and vice versa. A developer can only use the covariant return type for object types, not primitive ones.

Should return type be same in method overloading and overriding?

Return type of method does not matter in case of method overloading, it can be same or different. However in case of method overriding the overriding method can have more specific return type (refer this). Argument list should be different while doing method overloading.

What is the role of return type in method overriding?

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 we change return type in method overriding in C#?

You cannot change the return type of method during overriding.

Can we override a method by using same method name and arguments but different return types in Java?

Does return type matters in 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.

How can change return type in method 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 overriding have different parameters?

Overloading occurs when two or more methods in one class have the same method name but different parameters. Must have at least two methods by the same name in the class. Must have a different number of parameters.

What is covariant return type in method overriding?

The covariant return type specifies that the return type may vary in the same direction as the subclass. Before Java5, it was not possible to override any method by changing the return type.

Can we throw exception in overridden method?

An overriding method can throw any unchecked exceptions, regardless of whether the overridden method throws exceptions or not. However, the overriding method should not throw checked exceptions that are new or broader than the ones declared by the overridden method.

Can we change return type of main () method in Java?

You can write the main method in your program with return type other than void, the program gets compiled without compilation errors. But, at the time of execution JVM does not consider this new method (with return type other than void) as the entry point of the program.

Can overridden method have different signature?

No, while overriding a method of the super class we need to make sure that both methods have same name, same parameters and, same return type else they both will be treated as different methods.

Can I override a method twice?

Therefore it is not overridden twice by the same class. Each class overrides it once.

Which of the following is incorrect rule for method overriding?

If a method cannot be inherited, then it cannot be overridden. A subclass within the same package as the instance's superclass can override any superclass method that is not declared private or final. A subclass in a different package can only override the non-final methods declared public or protected.

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.

Is return type same in function overloading?

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.

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

In java, method overloading is not possible by changing the return type of the method only because of ambiguity.

Can we overload in same class?

Overloading can happen in same class as well as parent-child class relationship whereas overriding happens only in an inheritance relationship.

Can we overload method in different class?

Usually, method overloading happens inside a single class, but a method can also be treated as overloaded in the subclass of that class — because the subclass inherits one version of the method from the parent class and then can have another overloaded version in its class definition.

Can we override a method without virtual keyword?

You cannot override a non-virtual or static method. The overridden base method must be virtual , abstract , or override . An override declaration cannot change the accessibility of the virtual method. Both the override method and the virtual method must have the same access level modifier.

Can we overload method with different return type in Java?

No, you cannot overload a method based on different return type but same argument type and number in java. same name. different parameters (different type or, different number or both).

Can main method return type int?

Answer: Explanation: True, The default return type for a function is int.

Why main method return type is void in Java?

Java main method doesn't return anything, that's why it's return type is void . This has been done to keep things simple because once the main method is finished executing, java program terminates. So there is no point in returning anything, there is nothing that can be done for the returned object by JVM.

Can the return type of the main function be int yes or no?

main function return type is integer by default. But it cam be void also . When return type is integer ,you have to include "return 0" statement at the end .

What are the 4 rules for using exception handling with method overriding?