write program in java Design an abstract class GeometricObject. GeometricObject must ensure that its children must implement calcArea() method. Design RectangleYourRegNo and CircleYourName Classes as children of GeometricObject class with overridden toString() method to return “Rectangle with w Width and h Height is drawn” OR “Circle with r Radius is drawn”. The attributes of Rectangle are length, width. The attribute of Circle is radius Hint: Area of circle=πr2 , Area of rectangle= width*length
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write program in java
Design an abstract class GeometricObject. GeometricObject must ensure that its children must implement calcArea() method.
Design RectangleYourRegNo and CircleYourName Classes as children of GeometricObject class with overridden toString() method to return “Rectangle with w Width and h Height is drawn” OR “Circle with r Radius is drawn”. The attributes of Rectangle are length, width. The attribute of Circle is radius
Hint: Area of circle=πr2 , Area of rectangle= width*length
Step by step
Solved in 3 steps
- Modify the GeometricObject class to implement the Comparable interface and define a static max method in the GeometricObject class for finding the larger of two GeometricObject objects. Draw the UML diagram and implement the new GeometricObject class. Write a test program that uses the max method to find the larger of two circles, the larger of two rectangles.using java programmingModify the GeometricObject classto implement the Comparable interface and define a static max method in theGeometricObject class for finding the larger of two GeometricObject objects.Draw the UML diagram and implement the new GeometricObject class. Writea test program that uses the max method to find the larger of two circles, the largerof two rectangles.Write a java program Create an Abstract class Student that contains a method take exam, implement the method in the child classes PhdStudent and GradStudent in which PhdStudent takes exam by giving his final defense presentation while the graduate student gives a written paper.
- We have a parking office class for an object-oriented parking management system using java Add(implement) a method to the Parking Office class to return the collection of permit ids for a specific customer (getPermitIds(Customer)) using java I have attached two class diagrams with definitions of all related classes in our system (i.e car, customer, .....). N.B. Parking office methods in the class definition like register, getcustomer and addcharge have already been implemented, we just need an additional getPermitIds(Customer) method as mentioned above Explain your code in a few words Important- We have a method to return a collection of permit ids (getPermitIds), what we need is a method to return the collection of permit ids for a specific customer (getPermitIds(Customer))Define a class named ComparableCirclethat extends Circle and implements Comparable. Draw the UML diagramand implement the compareTo method to compare the circles on the basis ofarea. Write a test class to find the larger of two instances of ComparableCircleobjects, and the larger between a circle and a rectangle.For a parking management system, use the Observer pattern to implement this interaction using Java and implement the three classes mentioned below. Implement a ParkingObserver that has the role of the Observer. The Observable classes (Subjects) will be the ParkingLots. It would be helpful if the notify method in the subjects (and update method in the observers) took a parameter, perhaps an object of type ParkingEvent, which could have fields including the lot, timeIn, timeOut (if relevant), and permit. The ParkingObserver should register with each ParkingLot and receive the messages. Once a car enters (in an entry-scan only lot) or leaves (in an entry-scan and exit-scan lot), then the ParkingObserver will be updated, and then can register the charge with the parking system via the TransactionManager’s park() method. Based on these requirements you should implement three actor classes in this interaction using java: TransactionManager, ParkingObserver and ParkingLot. 1. The…
- Write a Java program with least two classes. Using the circle object to represent it. The class must have at least one (non-static) setter method and one (non-static) getter method. Implement at least on test that invokes the setter and getter method and the corresponding getter method so that the value out == the the value inImplement a new class that implements Comparatorof GregorianCalendar class to be able sort the calendar in increasingorder based on day, month, and year, in that order. Write a method to displaythe GregorianCalendar instance in “dd-MMM-yyyy” format usingSimpleDateFormatclass. Write a test program with 10 GregorianCalendarinstances and display the results after the sort.We have a parking office class for an object-oriented parking management system using java Add (implement )a method to the Parking Office c to return a collection of customer ids (getCustomerIds) using java I have attached two class diagrams with definitions of all related classes in our system (i.e car, customer, .....). N.B. Parking office methods in the class defination like register, getcustomer and addcharge have already been implemented, we just need an additional getcustomerID method as mentioned above
- In Java. Screenshot explains. Implement the Shape hierarchy -- create an abstract class called Shape, which will be the parent class to TwoDimensionalShape and ThreeDimensionalShape. The classes Circle, Square, and Triangle should inherit from TwoDimensionalShape, while Sphere, Cube, and Tetrahedron should inherit from ThreeDimensionalShape.Each TwoDimensionalShape should have the methods getArea() and getPerimeter(), which calculate the area and perimeter of the shape, respectively. Every ThreeDimensionalShape should have the methods getArea() and getVolume(), which respectively calculate the surface area and volume of the shape. Every class should have a member variable containing its dimensions -- for example, the Circle class should have a member variable describing its radius, while the Triangle class should have three member variables describing the length of each side. Note that the Tetrahedron cass should describe a regular tetrahedron, and as such, should only have one member…Design a java program that simulates a checkout line at a supermarket. The line is a queue object. Customers (i.e., customer objects) arrive in random integer intervals of from 1 to 4 minutes. Also, each customer is serviced in random integer intervals of from 1 to 4 minutes. Obviously, the rates need to be balanced. If the average arrival rate is larger than the average service rate, the queue will grow infinitely. Even with “balanced” rates, randomness can still cause long lines. Run the supermarket simulation for a 12-hour day (720 minutes), using the following algorithm: Choose a random integer between 1 and 4 to determine the minute at which the first customer arrives .At the first customer’s arrival time, do the following: Determine customer’s service time (random integer from 1 to 4). Begin servicing the customer. Schedule the arrival time of the next customer (random integer 1 to 4 added to the current time). For each minute of the day, consider the following: If the next…Write in java an abstract class Student that includes the following hidden attributes: id(int), name(String), major(String) and grade(double), then create setter and getter for each of them. Write two classes that inherited from Student: ItStudent and ArtStudent. The grade for ItStudent is calculated as: grade = mid*0.30 + project*0.30 + final*40 and the grade for ArtStudent is calculated as: grade = mid*0.40 + report*0.10 + final*50. Crate main class that achieve the following:a. Create an array of some Student objects from both ItStudent and ArtStudent classes.b. Sort the Student objects by grade in descending order using functions.c. Save the sorted objects into file.