o save time on development and debu To instantiate objects. To implement call-by-reference. To overload an operator.

6.b.Fast in java coding please. Thank you 1. Abstract classes and interfaces can both be used to model common features.How do you decide whether to use an interface or a class?2. What is Garbage Collection and how can you mark an object for GarbageCollection.

Implement a nested class composition relationship between any two class types from the following list: Advisor Вook Classroom Department Friend Grade School Student Teacher Tutor Write all necessary code for both classes to demonstrate a nested composition relationship including the following: a. one encapsulated data member for each class b. inline default constructor using constructor delegation for each class c. inline one-parameter constructor for each class d. inline accessors for all data members e. inline mutators for all data members

Written in Python with docstring please if applicable Thank you

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(),…

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Explain the procedure that must be followed in order for a method to take in arguments of both primitive and reference types.

In java, can a polymorphic reference invoke a method that is only declared at the object's class level? If "yes", explain how.

Let Course be a class with a default constructor and a parameterized constructor that accepts a C- string. How many times the default constructor is called when an array is defined as follows. Course myCourses[10] = {"CIS22B"}; Note that, when an array of objects is defined, the objects are created. And whenever an object is created, certain constructor is called to initialize the object. Feel free to test your answer in an IDE. O 1 O None of these O 10

Explain how to use wrapper classes for non-object data types so that you don't end up with a jumbled bag of non-object and object values?