Car herCar = new Car(); Car hisCar = new Car();   Car myCar = hisCar; hisCar = null; myCar = herCar; herCar = hisCar;   suppose the following obejexts created in the class car, How many "null reference" can you see in this code? How many "unreachable objects" can you see in this code, which will be subject to garbage collection? How many "active object reference" can you see in this code? How many "reachable objects" can you see in this code?

I've gotten stuck on this practice problem. I need help figuring this out.    You need to make a Pet class that holds the following information as private data members: the name of the pet (e.g. "Spot", "Fluffy", or any word a user enters) the type of pet (e.g. dog, cat, snake, hamster, or any word a user enters) level of hungriness of the pet (2 means hungry, 1 means content, 0 means full) Your class also needs to have the following functions: a default constructor that sets the pet to be a dog named Buddy, with level of hungriness being “content” a parameterized constructor to allow having any type of pet the order of the parameters is: name of the pet, type of pet, hungriness level a PrintInfo function that prints the info for the pet according to the sample output below a TimePasses function that increases the hungry level of the pet by one (unless its hungry level is already 2, meaning hungry). a FeedPet function that changes the hungry level of the pet to 0 (Full) You must…

Write a class that tests and demonstrates that your Candidate and Electionclasses implement the specification given above. Note that this does not need to be a Junit test class.Your test class must illustrate all of the features that you have implemented. This will best be done by having at least one separate test method for each feature. For instance:• A method that creates a Candidate object and prints out the result of calling each of its accessor (get) methods; • A method that adds a vote to an existing Candidate object.• A method that creates an Election object, creates a few Candidateobjects and adds them to it, and then calls the printAll method;• A method that finds a matching Candidate;• A method that does not find a matching Candidate;• etc.Note that the list above is not a complete list of the test class’s methods and you will need to define more than those for this part. It will be worth writing this test class alongside writing the other classes. For instance, develop the…

2 part question I am using eclipse! Create a class Circle, which - has a field radius (double) It should have appropriate accessor and mutator.   If the Circle instance is created without parameter, the radius should be set to 1.0. Otherwise the radius should be set to the specified value.   The Circle class should have a class level (not instance level) field called Pi. Since Pi is a known constant (3.14159), this field should be a constant. This variable can be accessed directly by outside objects.   This Circle class should have a getArea() method and getPerimeter() method. You need to decide their return value and access level.   Note: Area = Pi * radius * radius Perimeter = 2 * Pi * Radius   part 2 Create a subclass of Circle class ColoredCircle by implementing the ColoredShape interface. It should have a field color of type enum ShapeColor. ColoredShape.java ShapeColor.java  ColoredCircle should have two constructors. One will takes one parameters radius and set the color to…