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What happens when two interfaces are created with same name?
7 Answers. If a type implements two interfaces, and each interface define a method that has identical signature, then in effect there is only one method, and they are not distinguishable. If, say, the two methods have conflicting return types, then it will be a compilation error.
Can you implement two interfaces with default method with same name and signature?
No, its an error If two interfaces contain a method with the same signature but different return types, then it is impossible to implement both the interface simultaneously. According to JLS (§8.4. 2) methods with same signature is not allowed in this case.
Can a class implement two interfaces with the same method signature C#?
C# | How to Implement Multiple Interfaces Having Same Method Name. Like a class, Interface can have methods, properties, events, and indexers as its members. But interface will contain only the declaration of the members. C# allows the implementation of multiple interfaces with the same method name.
What happens if two interface have same method name C#?
Answer: If we have two interface with same method name then a class need to implement interface explicitly in a program. [Note: For this interview question, an interviewer expects explanation of explicit interface implementation with a complete program example.
Can you implement two interfaces with the same signature?
If two interfaces contain a method with the same signature but different return types, then it is impossible to implement both the interface simultaneously. According to JLS (§8.4.2) methods with same signature is not allowed in this case.
When to implement two interfaces with same name?
But when two interface have a method with the same name but different return type and you implement two methods in concrete class:
Why do Java classes have the same name and signature?
It seems the rationale was that if a class has multiple declarations with the same name and signature, since the class may have inherited them through multiple paths—implementing an interface and also subclassing a class that implements that interface, for example—no harm is done.
Can a method have the same signature as a constructor?
According to JLS (§8.4.2) methods with same signature is not allowed in this case. Two methods or constructors, M and N, have the same signature if they have, the same name the same type parameters (if any) (§8.4.4), and after adopting the formal parameter types of N to the type parameters of M, the same formal parameter types.