Computer scienceProgramming languagesJavaCode organizationObject-oriented programmingClass hierarchiesInterfaces and abstract classes

Fundamentals of interfaces in Java

Theory

Which methods must be overridden

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Here is an interface and a class implementing this interface:

interface A {
    
    static void staticMethod() { }
    
    void method();
    
    default void defaultMethod() { }

    abstract void abstractMethod();
}

class B implements A { }

Which methods must be implemented in the class B?

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