QUESTION 4 An abstract class can only be extended. You cannot instantiate objects of an abstract class. True False QUESTION 5 A java class cannot implement more that one interface. True False QUESTION 6 Check all that apply about object interfaces. The object interface is comprised of all the methods that an object implements. Object interfaces are also known as object signatures. An object interface is the set of all interfaces that the class the object is an instance of implements. The object interface describes how other objects should interact with it. QUESTION 7 An object is the same as a class. True False QUESTION 8 In Java, a default constructor is not provided unless it is defined. True False QUESTION 9 A class that implements an interface must implement all abstract methods defined in the interface. The interface is a contract that the class must honor. True False