Can We overload a method with same arguments but different return types?
Overloading with same arguments and different return type − 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 −
How to differentiate overloaded methods in Java?
Overloaded methods are differentiated based on the number and type of the parameters passed as an argument to the methods. You can not define more than one method with the same name, Order and the type of the arguments. It would be a compiler error. The compiler does not consider the return type while differentiating the overloaded method.
Can You overload a function by changing the return type?
You can only overload by changing the parameter list. Changing the return type alone is not valid for method overloading as the return type is not part of the method signature (just the method name and parameter list are in the method signature). Show activity on this post. Check out this awesome answer, Function overloading by return type?
Is it possible to overload a method?
You can only overload by changing the parameter list. Changing the return type alone is not valid for method overloading as the return type is not part of the method signature (just the method name and parameter list are in the method signature).
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.
Does function overloading depend on return type?
By depending on the parameters provided for the method, in the run time, compiler determines which version of the method to execute. An overloaded method may or may not have different return types. But return type alone is not sufficient for the compiler to determine which method is to be executed at run time.
What happened if two methods have same name same parameters but different return types?
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.
Is return type same in 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.
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 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.
Is it possible to have two methods in a class with same method signature but different return types?
if class is same and if and only if both methods having different parameter then only it is possible.
Can we overload method in different class?
Yes it is overloading , This overloading is happening in case of the class ' C ' which is extending P and hence having two methods with the same nam e but different parameters leading to overloading of method hello() in Class C .
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).
Can generic type constraints help?
The problem is that it is often difficult to do something meaningful with a generic type, e.g. you cannot apply arithmetic operations to it. Sometimes generic type constraints can help.
Is the return type of a method a part of the method signature?
but the return type of a method is not considered as a part of the method's signature.
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.
Can you create a method with the same name and number?
You can't create method with same name, same number and types of parameters.
Can you have the same signature and the same return type?
Check this.. You can't have method with same signature and just different return type. Recommended is mentioned in this question.
Can you overload a function?
You can not overload the function by differing only their return type . You can only overload the function in the following ways
What happens if you change the return type of the overriden method?
If you change the return type of the overriden method to something else which is not a sub-type of the original type, then you'd get a compile time error. Share. edited Jan 25 '13 at 10:32.
What is the name of the subtype of the original return type?
Your overriden method can have same type or the sub-type of the original return type which is called as covariant return.
What does "compatibility" mean in Java?
Compatible means: it's a subclass, sub-interface, or implementation of the class or interface returned by the overridden method. And that's logical. If a method returns an Animal, and your derived class returns a Cow, you're not breaking the contract of the superclass method, since a Cow is an Animal. If the derived class returns ...
Why does Java throw a compile error?
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.
Can you override different return types?
Yes we can override different return types but they should be subclass. public class Shape { public Shape area (Integer i) { System.out.println ("Sape Area"); System.out.println ("Integer"); return null; } } package com.oops; public class Circle extends Shape { public Circle area (Integer i) { System.out.println ("Circle Area"); System.out.println ("int"); return null; } }
Is it possible to return a subcass of a super class?
The same goes for Exceptions in the method declaration too. Yes, it is possible since Java 5, it is called covariant return type. The return type should be a subcass of super class method return type (primitive types are not allowed). Example.
Can a subclass have the same type as the original return type?
Yes, it is possible since Java 5, it is called covariant return type. The return type should be a subcass of super class method return type (primitive types are not allowed). Example. Your overriden method can have same type or the sub-type of the original return type which is called as covariant return.
How to overload a method?
Method overloading can be done by changing: 1 The number of parameters in two methods. 2 The data types of the parameters of methods. 3 The Order of the parameters of methods.
Can you define more than one method with the same name?
You can not define more than one method with the same name, Order and the type of the arguments. It would be a compiler error.
Can you declare more than one method?
You can not define more than one method with the same name, Order and the type of the arguments. It would be a compiler error. 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 type. It will throw a compile-time error.
