An inheritance relationship is created using three classes, D, E, and F. Each class has several instance Time left 0:08:48 seen below. class D{ } protected int al; public D() { a1 = 0; System.out.println("D's Default Constructor."); } public D(int al) { this.al = al; System.out.println("D's Overloaded Constructor."); } class E extends D{ protected char b1; public E() { b1 = ''; System.out.println("E's Default Constructor."); } public E(int al, char b1) { super (a1); this.b1b1; System.out.println("E's Overloaded Constructor."); class F extends E{ protected String c1; public F() { super(); c1 = ""; System.out.println("F's Default Constructor."); } public F(String c1) { this.c1c1; System.out.println("F's First Overloaded Constructor."); } public F(int al, char b1, String c1) { this (c1); } this.al al; this.bl= b1; System.out.println("F's Second Overloaded Constructor."); } What is printed by the following code snippet? F obj1 = new F("true"); F obj2 = new F(1, 't', "True"); What is printed by the following code snippet? F obj1 = new F("true"); F obj2= new F(1, 't', "True"); D's Default Constructor. E's Default Constructor. F's Second Overloaded Constructor. Time left 0:08:38 Time left 0:08:28 F's First Overloaded Constructor.

Question 1 Consider: class Car { ? } public Car() { } What happens if you try to run new Car(); A new object is created A new class is created It does not run Nothing happens

In UML class diagram given below, which attributes and behaviors of the Animal class would be inherited by the Dog class? Animal int # numberOfLegs: # numberOfTails: int # name: String + walk() + run() + eat() + playFetch() Dog A None of the attributes and behaviors are inherited B numberOfLegs, numberOfTails, walk(), run(), eat() (c) All attributes and behaviors of Animal are inherited playFetch()

Making sure that encapsulation is not violated (i.e., instance variables must be private); design an inheritance hierarchy of classes Car, Truck, and Vehicle based on the following description. Car is a Vehicle. Truck is a Vehicle.   (a) Definition of class Vehicle Instance variables: year                 that holds the year of vehicle (int) make               that holds the make of vehicle (string)   Methods: a default constructor with no arguments. a second constructor that accepts the Vehicle's year and the make as arguments. These values should be assigned to the object's instance variables: year and make.  A copy constructor that accepts an existing vehicle object reference as argument and copies the values of instance variables to the newly created object.   Accessor methods (getYear() and getMake()) that get the values of instance variables.   Mutator methods (setYear(int) and setMake(String)) that set the values of instance variables.   toString() should return a…