(Rectangle Class) Create a class Rectangle with attributes lengthand width, each of which defaults to 1. Provide methods that calculatethe rectangle’s perimeter and area. It has set and get methods for bothlength and width. The set methods should verify that length andwidth are each floating-point numbers larger than 0.0 and less than 20.0.Write a program to test class Rectangle.(Java Programming Language)

(Protected vs. Private Base Classes) Some programmers prefer not to use protected accessbecause they believe it breaks the encapsulation of the base class. Discuss the relative merits of usingprotected access vs. using private access in base classes.

(IllegalArgumentException)Programming  defined the Triangle class with three sides. In the a triangle the sum of any two sides is greater then than the other side. Create IllegaTriangleException class, and modify the constructor of Triangle classto throw an IllegaTriangleException object if a triangle is created with sides that violate the rule, as follows: /** Construct a tringle the specified sides*/ public Triangle(double side1, double side2, double side3) throws IllegaTriangleException{ //Implement

(The MyDate class) Design a class named MyDate. The class contains: The data fields year, month, and day that represent a date. month is 0-based, i.e., 0 is for January. A no-arg constructor that creates a MyDate object for the current date. A constructor that constructs a MyDate object with a specified elapsed time since midnight, January 1, 1970, in milliseconds. A constructor that constructs a MyDate object with the specified year, month, and day. Three getter methods for the data fields year, month, and day, respectively. A method named setDate(long elapsedTime) that sets a new date for the object using the elapsed time. Draw the UML diagram for the class and then implement the class. Write a test program that creates two MyDate objects (using new MyDate() and new MyDate(34355555133101L)) and displays their year, month, and day. (Hint: The first two constructors will extract the year, month, and day from the elapsed time. For example, if the elapsed time is 561555550000…

(Rational Class) Create a class called Rational for performing arithmetic with fractions.Write a program to test your class. Use integer variables to represent the private data of the class—the numerator and the denominator. Provide a constructor that enables an object of this class to beinitialized when it’s declared. The constructor should contain default values in case no initializersare provided and should store the fraction in reduced form. For example, the fractionwould be stored in the object as 1 in the numerator and 2 in the denominator. Provide publicmember functions that perform each of the following tasks:a) Adding two Rational numbers. The result should be stored in reduced form.b) Subtracting two Rational numbers. The result should be stored in reduced form.c) Multiplying two Rational numbers. The result should be stored in reduced form.d) Dividing two Rational numbers. The result should be stored in reduced form.e) Printing Rational numbers in the form a/b, where a is…

(Using C++) Define a base class vehicle and its two derived classes :Car and Scooter. Write a program to ask the user for the type of vehicle and then using the concept of runtime polymorphism, display the message "It is a two-wheeler" for scooter and "It is a four-wheeler" for car.

(Dynamic Binding vs. Static Binding) Distinguish between static binding and dynamicbinding. Explain the use of virtual functions and the vtable in dynamic binding

(Geometry: MyRectangle2D class)  Define the  MyRectangle2D class that contains:  Two double data fields named x and y that specify the center of the rectangle with getter and setter methods. (Assume the rectangle sides are parallel to the x- or y-axis.) The data fields width and height with getter and setter methods. A no-arg constructor that creates a default rectangle with (0, 0) for (x, y) and 1 for both width and height. A Constructor that creates a rectangle with the specified x, y, width, and height. A method getArea() that returns the area of the rectangle. A method getPerimeter() that returns the perimeter of the rectangle. A method contains(double x, double y) that returns true if the specified point (x, y) is inside this rectangle (see Figure 10.24a ). A method contains(MyRectangle2D r) that returns true if the specified rectangle is inside this rectangle (see Figure 10.24b ). A method overlaps(MyRectangle2D r) that returns true if the specified rectangle overlaps with this…

(Triangle class) Design a new Triangle class that extends the abstract GeometricObject class. Draw the UML diagram for the classes Triangle and GeometricObject and then implement the Triangle class. Write a test program that prompts the user to enter three sides of the triangle, a colour, and a Boolean value to indicate whether the triangle is filled. The program should create a Triangle object with these sides and set the colour and filled properties using the input. The program should display the area, perimeter, colour, and true or false to indicate whether it is filled or not.