Computer scienceProgramming languagesJavaCode organizationObject-oriented programmingClass hierarchiesInterfaces and abstract classes

Default methods

Theory

Java Interface Default Method Execution

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If you have an interface in Java with a default method and two classes ClassA and ClassB implement this interface but ClassB overrides the default method. What will be the output when the following code is executed?

InterfaceName objA = new ClassA();
InterfaceName objB = new ClassB();
objA.defaultMethod();
objB.defaultMethod();

Select one option from the list

Both calls will result in a compilation error because default methods cannot be called on an object of the implementing class.

The method call on objA will execute the overridden method in ClassA, and the method call on objB will execute the overridden method in ClassB.

The method call on objA will execute the code defined in the interface's default method, and the method call on objB will execute the overridden method in ClassB.

Both calls will execute the code defined in the interface's default method.

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