Define a class counterType to implement a counter. Your class must have a private data member counter of type int and functions to set counter to the value specified by the user, initialize counter to 0, retrieve the value of counter, and increment and decrement counter by one. The value of counter must be nonnegative.

Write a C#program that uses a class called ClassRegistration as outlined below: The ClassRegistration class is responsible for keeping track of the student id numbers for students that register for a particular class. Each class has a maximum number of students that it can accommodate.   Responsibilities of the ClassRegistration class: It is responsible for storing the student id numbers for a particular class (in an array of integers) It is responsible for adding new student id numbers to this list (returns boolean) It is responsible for checking if a student id is in the list (returns a boolean) It is responsible for getting a list of all students in the class (returns a string). It is responsible for returning the number of students registered for the class (returns an integer) It is responsible for returning the maximum number of students the class is allowed (returns an integer) It is responsible for returning the name of the class. (returns a string)   ClassRegistration -…

Define a class for a type called Counter . An object of this type is used to count things. Include a default constructor that sets the counter to zero and a constructor with one argument that sets the counter to the value specified by its argument. Write member functions to increase the value by one (called increment ) and decrease the value by one (called decrement ), don’t let the value go below 0. Write a member function ( print ) that prints out the value of the counter.*The first photo is the driver program that you should include to test your class ****The second is what the program should look like****

A binary operator is an operation that is performed on two operands. For example, addition is a binary operator that adds two operands (e.g., 2 + 4). In the provided UML diagram, all binary operators have two operands and an execute method that performs the appropriate operation on the operands. The AddOperation class should add the two operands. The SubtractOperation class should subtract the two operands. Here is an example of how a binary operator could be used: IBinaryOperator operator = new AddOperator(8, 12);System.out.println(operator.execute()); // should print 20operator.setLeftOperand(18);System.out.println(operation.execute()); // should print 30 crate a Main.java to test your code

in C++ Define a new “Word” class that must inherit from the given Name class. This class manages a dictionary word info: name (string) and its definition (string). It must prevent the creation of a Word object with either an empty or all-blank word or definition. This class must at least complete the methods defined in the Name class: toString method returns a string representation of the Word object in the format of “WORD( <word> ) DEFINITION( <definition> ) such as WORD(school) DEFINITION(an educational institution) contains method that accepts a search string and returns true if either word or definition contains the search string as a substring. It returns false otherwise. isTheSame method that compares two Word objects and returns true only if both Word objects have the exact same word and definition and false otherwise. Please note that if the given object in the parameter is not a Word object, it will return false.

Inheritance, Polymorphism, ArrayLists, Throwing Exceptions The UML diagram below shows a set of classes designed to represent a music collection from 1995. The constructors and methods all function in the standard way, except: The equipmentRequired method should return “Record Player” or “CD Player” as appropriate.The getAlbum method of the NinetiesMusicCollection class accepts an index and returns the corresponding Album object. This method throws an IllegalArgumentException if the index is out of range. (This is the only exception you have to throw anywhere in your code.)In the NinetiesMusicCollection constructor, you can assume the ArrayList<Album> object passed as an argument is not null . Don’t worry about privacy leaks.Implement this set of classes in Java. Note the italics on the Class name “Album” and the method name “equipmentRequired” in the Album class.

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

in c++ Define another new class named “Item” that must inherit from the given Name class. This Item class will manage the following info: name (string) and price (double). It must prevent the creation of an Item object with either an empty or all-blank name. This class must at least complete the methods defined in the Name class: toString method returns a string representation of the Item object in the format of “ITEM( <name> ) PRICE($ <price> ) such as ITEM(eraser) PRICE($1.05) contains method that accepts a search string and returns true if only the name of the item contains the search string as a substring. It returns false otherwise. isTheSame method that compares two Item objects and returns true only if both Item objects have the exact same name (regardless of the price) and false otherwise. Please note that if the given object in the parameter is not an Item object, it will return false.

In java Define and create an array (called emps) of object references for objects of class Employee of length 100. (b) Create three objects for classes SalariedEmp, WeeklyEmp, and HourlyEmp (where these 3 classes are subclasses of class Employee); and with references e1, e2, e3 for the 3 objects:(c) Assign e1,e2, e3 to the first three elements of array emps:(d) Print the earnings of the 100 employee in the array emps in one loop (with polymorphism) where earnings are calculated with method earnings():

Create a class named Line: (a) Define private data members p1 and p2 as pointer to Point objects (the one we had in lectures), slope and length as double variables. (b) Define setter and getter functions. (c) Define a null-constructor that initializes numeric variables with zero and allocate dynamic memory for points and initialize them to [0,0] as well. (d) Overload a constructor that allocates memory for points, initilize them with given arguments, and calculate the slope and length. (e) Implement destructor, copy constructor and copy assignment operator. (f) Create a function called ”parallel” that takes too Line objects, returns true when given lines are parallel and returns false otherwise. (g) Overload the less than (<) and greater than (>) and equality (==) operators (compare the length). (h) Write a functions that reads lines in the format provided in the lines.txt from the file (without any change) and stores them in a vector named Lines. (i) Sort the objects of Lines…