8.3.1 Exercise Java-functional1 | COMP.CS.140 Ohjelmointi 3: Rajapinnat ja tekniikat

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Question 1 2 points

In Java a functional interface means

an interface that defines a single abstract member function

an interface with exactly one member function

an interface class

Question 2 2 points

A function object is

an object whose type has several abstract member functions

an object instantiated from an interface class

an object that implement a functional interface that provides an implementation to an abstract method of a functional interface

Question 3 1 point

The Java class library defines as an functional interface

several alternatives incl. the Comparator interface

only the Comparator interface

interfaces that never have more than one function

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