What is the difference between a class and an object? Can you explain this using an example from the real world?

Explain how class (static) variables and methods differ from their instance counterparts. Give an example of a class that contains at least one class variable and at least one class method. Explain why using a class variable and method rather than an instance variable and method would be the correct choice in the example you select.

What are the two main visual distinctions between the constructor and the class methods?

What is the best reason to make a method be a static method? A. When the method does not make use of any of the class variables. B. When it includes a reference to a static variable. C. When we want to guarantee that it is a public method. D. Static methods should not be used in object oriented languages.

What exactly do we mean when we talk about "encapsulation" while talking about object-oriented methods?

When you say "constructors," what do you mean? I don't understand what Constructors are supposed to be used for.

When should one use an abstract class, when should one use an interface, and when should one use both?

Use java programming properties to write all the necessary classes and/or interfaces for a solution to the problem. Focus on class structure and interaction. You may implement your solution however you wish, but you will be graded on the appropriateness of your solution to the requirements. Note the use of capitalization and parentheses for clarification. You may use whatever constructors or additional methods you wish. Define a structure that can represent Animals. Animals have two behaviors; they can speak() and they can move(). By default, when an animal moves, the text "This animal moves forward" is displayed. By default, when an animal speaks, the text "This animal speaks" is displayed. A general Animal should not be able to be instantiated. Define two classes, Goose and Lynx, that are Animals. Both Goose and Lynx behave such that where "Animals" is displayed in speak() or move(), "goose" or "lynx" is displayed by the appropriate classes. Finally, any instance of Goose can fly(),...

Help, I making a elevator simulator. I have to use polymorphism and object oriented programming to write this code. Can someone please help me improve this code I have. The remaining code is in the pictures. Any help is appreciated. Thank You! The simulation should have 4 types of Passengers: Standard: This is the most common type of passenger and has a request percentage of 70%. Standard passengers have no special requirements. VIP: This type of passenger has a request percentage of 10%. VIP passengers are given priority and are more likely to be picked up by express elevators. Freight: This type of passenger has a request percentage of 15%. Freight passengers have large items that need to be transported and are more likely to be picked up by freight elevators. Glass: This type of passenger has a request percentage of 5%. Glass passengers have fragile items that need to be transported and are more likely to be picked up by glass elevators. The simulation should also have 4 types...

How do you mean to use the word "constructors" in this context? For the life of me, I can't figure out what the point of Constructors is.

When should one use an abstract class, when should one use an interface, and when should one use both?

In the class diagram below we have a money class for an object-oriented parking system that is to be designed using java. Briefly explain any implementation decisions and the reasoning behind those without writing the complete code. N.B explain how the implementation will proceed instead of writing code

Suppose a parent class has a few methods that the child would like to use, but the methods are not appropriate for the child. What can the child do to make the methods 'usable' for itself?