Select the correct answerWhat happens when a constructor is defined for an interface?OptionsCompilation failureThe interface compiles successfullyThe implementing class will throw exceptionRuntime Exception
Question
Select the correct answerWhat happens when a constructor is defined for an interface?OptionsCompilation failureThe interface compiles successfullyThe implementing class will throw exceptionRuntime Exception
Solution
The correct answer is "Compilation failure".
Here's why:
In Java, an interface cannot have a constructor. A constructor is a special method used to initialize an object. However, interfaces in Java cannot be instantiated (i.e., you cannot create an object of an interface), so there is no use for a constructor in an interface. Therefore, if you try to define a constructor within an interface, it will result in a compilation failure.
Similar Questions
Select the correct answerWhat will happen if we provide concrete implementation of method in interface?OptionsRuntime exception is thrownThe concrete class implementing that method need not provide implementation of that methodCompilation failureMethod not found exception is thrown
Select the correct answerWhat is true about constructor?OptionsIt can contain return type It can take any number of parametersIt can have any non access modifiersConstructor cannot throw an exception
Select the correct answerWhat does an interface contain?OptionsMethod definitionMethod declaration and definitionMethod nameMethod declaration
Select the correct answerAll methods must be implemented of an interface.OptionsTrueFalse
Select the correct answerWhat would be the behaviour if one parameterized constructor is explicitly defined?OptionsRuntime errorCompilation succeedsCompilation errorCompilation succeeds but at the time of creating object using default constructor, it throws compilation error
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