No, you cannot overload a method based on different return type but same argument type and number in java. In overloading it is must that the both methods have − same name.
Can We override a method with the same signature but different return types?
Yes it may differ but there are some limitations. Before Java 5.0, when you override a method, both parameters and return type must match exactly. Java 5.0 it introduces a new facility called covariant return type. You can override a method with the same signature but return a subclass of the object returned.
Can We overload a method based on different return type?
This mechanism is known as method overloading. No, you cannot overload a method based on different return type but same argument type and number in java. In overloading it is must that the both methods have −
Why does my override fail with the return type?
As for your case, override clearly fails with the return type. But even if the return types were same, your method still wouldn't be override equivalent, as you have fewer type parameters in the supposed-to-be overridden method. Two methods have the same signature if they have the same name and argument types.
Can We override a method with different return type in Java?
according to the book it also says the java will throw a compile error when we try to overload a method with same method name and parameters but different return types since the signature means only the method name and parameters. If this is true, we should be able to override a method with different return type. Please help me to understand this.
What happens when method signature is the same and the return type is different?
The compiler does not consider the return type while differentiating the overloaded method. But you cannot declare two methods with the same signature and different return types. It will throw a compile-time error. If both methods have the same parameter types, but different return types, then it is not possible.
Does overloading method have the same signature?
Method overloading is possible only if the overloaded methods have different signatures. It cannot be possible if the signature is same and only the return type is different.
Can a method be override with the same method name and arguments but different return types?
The basic rule for overriding a method in Java is that the new overriding method in derived class should have same signature as of Base class's method. But there is on exception to this rule i.e. Overriding method can have different return type but this new type should be, A Non-Primitive.
Should return type be same in method overloading and overriding?
In java, method overloading can't be performed by changing return type of the method only. Return type can be same or different in method overloading. But you must have to change the parameter. Return type must be same or covariant in method overriding.
Can we overload method with different return type?
No, you cannot overload a method based on different return type but same argument type and number in java.
Can we override method with different return type?
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 overload method with different return type C++?
Function overloading and return type in C++ The definition of the function must differ from each other by the types and/or the number of arguments in the argument list. You cannot overload function declarations that differ only by return type.
Why method overloading is not possible by changing the return type of method only?
In java, method overloading is not possible by changing the return type of the method only because of ambiguity.
Why we Cannot overload a function on return type?
During compilation, the function signature is checked. So, functions can be overloaded, if the signatures are not the same. 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.
Can we overload the overridden method?
You can overload the method as long as its signature is unique within the class, the base class is not considered. The reason nothing is printed is because in the overloaded method you are just returning the passed in value rather than printing it.
What are rules of method overriding and overloading?
Overloading vs Overriding: Difference between Method Overloading and Method OverridingMethod OverloadingMethod OverridingParameters must be different in case of overloadingParameters must be same in case of overridingIs an example of compile-time polymorphismIt is an example of runtime polymorphism4 more rows•Mar 28, 2022
Which method Cannot be overridden?
A method declared final cannot be overridden. A method declared static cannot be overridden but can be re-declared. 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.
What happens if you don't have a method of the same name with the same parameters?
Your code will result in a Compiler Error. You can not have a Method of the same name with the same parameters and a different return type, the caller would not know which Method to call (will not be able to resolve the location in Memory of the Method to call, why the Compiler would not allow it).
Does C# support method resolution?
C# does not allow it. C# on the other hand does not support method resolution based on the return type; this was a conscious decision by the language designers not to expose the feature of the CLR which allows it. There's no technical reason why they couldn't have done, they just felt it better not to.
Does return type matter?
The return type doesn’t matter. If they don’t have different parameters, they both are still considered as same method and a compile time error will be generated.
Can you overload a method based on the same argument type and number in Java?
No, you cannot overload a method based on different return type but same argument type and number in java. In overloading it is must that the both methods have −. same name. different parameters (different type or, different number or both). The return type doesn’t matter.
Can override fail with return type?
As for your case, override clearly fails with the return type. But even if the return types were same, your method still wouldn't be override equivalent, as you have fewer type parameters in the supposed-to-be overridden method. Two methods have the same signature if they have the same name and argument types.
Can you change the number of type parameters in an overridden method?
You can't change the number of type parameters in the overridden method. As for your case, override clearly fails with the return type. But even if the return types were same, your method still wouldn't be override equivalent, as you have fewer type parameters in the supposed-to-be overridden method.