Why does the call: System.out.println(System.out): java.io.Printstream@7a84e4? produce a result such as 1) Because the implementor of...

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Why does the call: System.out.println(System.out): java.io.Printstream@7a84e4? produce a result such as 1) Because the implementor of the PrintStream class supplied a toString method 2) Because the implementor of the PrintStream class did not supply a toString method 3) Because the constructor of the PrintStream class did not get a toString method 4) Because the compiler of the PrintStream class did not supply a toString method If we mark fields in a class as protected, so that subclasses can access the fields directly what is a cause of concern? 1) Other classes in the same package can access the protected fields as if they were public breaking encapsulation. 2) Sub classes outside the package cannot access the protected super class fields 3) Protected fields cannot be manipulated by public methods While you are creating a class inheritance hierarchy about motor vehicles that will contain classes called Vehicle, Auto, and Motorcycle. Which of the following statements is correct? 1) Vehicle should be the default class, while Auto and Motorcycle should be the subclasses. 2) Vehicle should be the superclass, while Auto and Motorcycle should be the subclasses. 3) Vehicle should be the subclass, while Auto and Motorcycle should be the superclasses. 4) Vehicle should be the subclass, while Auto and Motorcycle should be the default classes. 5) All of the statements are correct. The reason why we cannot use this reference in a static method is because: 1) A static method does not have variables 2) A static method can be called when no objects of the class have been instantiated 3) A static method cannot be called when no objects of the class have been instantiated 4) All the answers are not correct Consider the above code snippet: Public abstract class Mansion{ } 1) This code snippet is just a template and can be instantiated into an object. 2) The above code snippet is not a template and can be instantiated into an object. 3) The above code snippet can be instantiated but your team has to extend it to a concrete class before. 4) The above code snippet can be instantiated but your team has to extend it to a concrete class after. Constructor chaining occurs when a call to a constructor is made from inside another constructor of a different class, and applies to overloaded constructors. True / False Final variables can be initialized when they are declared. If a class provides multiple constructors, everyone would be required to initialize each final variable. A final variable can be modified by assignment after it has been initialized. If a final variable is not initialized, a compilation error occurs. True / False If a local variable or parameter in a method has the same name as a field of the class, the field is hidden until the block terminates execution. This is called 1) Scope 2) Shadowing 3) Chaining 4) Boxing The most general entity in an inheritance hierarchy is a class called_ 1) Default class 2) Superclass 3) Subclass 4) Inheritance class The rule that allows a subclass object to be used when a superclass object is expected is known as 1) Subclass principle 2) Substitution principle 3) Extension Principle 4) None of the above answers are correct Why does the call: System.out.println(System.out): java.io.Printstream@7a84e4? produce a result such as 1) Because the implementor of the PrintStream class supplied a toString method 2) Because the implementor of the PrintStream class did not supply a toString method 3) Because the constructor of the PrintStream class did not get a toString method 4) Because the compiler of the PrintStream class did not supply a toString method If we mark fields in a class as protected, so that subclasses can access the fields directly what is a cause of concern? 1) Other classes in the same package can access the protected fields as if they were public breaking encapsulation. 2) Sub classes outside the package cannot access the protected super class fields 3) Protected fields cannot be manipulated by public methods While you are creating a class inheritance hierarchy about motor vehicles that will contain classes called Vehicle, Auto, and Motorcycle. Which of the following statements is correct? 1) Vehicle should be the default class, while Auto and Motorcycle should be the subclasses. 2) Vehicle should be the superclass, while Auto and Motorcycle should be the subclasses. 3) Vehicle should be the subclass, while Auto and Motorcycle should be the superclasses. 4) Vehicle should be the subclass, while Auto and Motorcycle should be the default classes. 5) All of the statements are correct. The reason why we cannot use this reference in a static method is because: 1) A static method does not have variables 2) A static method can be called when no objects of the class have been instantiated 3) A static method cannot be called when no objects of the class have been instantiated 4) All the answers are not correct Consider the above code snippet: Public abstract class Mansion{ } 1) This code snippet is just a template and can be instantiated into an object. 2) The above code snippet is not a template and can be instantiated into an object. 3) The above code snippet can be instantiated but your team has to extend it to a concrete class before. 4) The above code snippet can be instantiated but your team has to extend it to a concrete class after. Constructor chaining occurs when a call to a constructor is made from inside another constructor of a different class, and applies to overloaded constructors. True / False Final variables can be initialized when they are declared. If a class provides multiple constructors, everyone would be required to initialize each final variable. A final variable can be modified by assignment after it has been initialized. If a final variable is not initialized, a compilation error occurs. True / False If a local variable or parameter in a method has the same name as a field of the class, the field is hidden until the block terminates execution. This is called 1) Scope 2) Shadowing 3) Chaining 4) Boxing The most general entity in an inheritance hierarchy is a class called_ 1) Default class 2) Superclass 3) Subclass 4) Inheritance class The rule that allows a subclass object to be used when a superclass object is expected is known as 1) Subclass principle 2) Substitution principle 3) Extension Principle 4) None of the above answers are correct

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question 1 The correct answer is Because the implementor of the PrintStream class did not supply a toString method When you call SystemoutprintlnSyste... View the full answer