Write a java program to create a class circle class with radius as data member. Create two constructors (no argument, and two arguments) and a method to calculate Circumference.
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- Write a program in java Design a class that holds the following personal data: name, address, age, and phone number.Write appropriate accessor and mutator methods. Demonstrate the class by writing aprogram that creates three instances of it. One instance should hold your information, andthe other two should hold your friends’ or family members’ information.ANSWER IN JAVA Create a class called Date that includes three instance variables-a month (type int), a day (type int) and a year (type int). Provide a constructor that initializes the three instance variables and assumes that the values provided are correct. Provide a set and a get method for each instance variable. Provide a method displayDate that displays the month, day and year separated by forward slashes (/). Add a main method to the class that demonstrates class Date's capabilities.In Java , Create a class circle class with radius as data member. Create two constructors (no argument, and two arguments) and a method to calculate Circumference.
- Write a Java Program, Create a class with a method that prints "This is parent class" and its subclass with another method that prints "This is child class". Now, create an object for each of the class and call 1 - method of parent class by object of parent class 2 - method of child class by object of child class 3 - method of parent class by object of child class In the above example, declare the method of the parent class as private and then repeat the first two operations (You will get error in the third).Write a java program Write a class named Employee with name and salary as private data fields. Add a constructor with both parameters. Write a class named Manager which unherits the Employee class. Add an instance variable, named department, of type String and 15 private. Add a constructor in the subclass class and a toString () method that prints the manager's name, department, and salary [Hint: Add a tastanel) method in the super class as well]. Create objects of Manager and Employee dass1. Implement the following classes and interface in Java.• Shape interface which has the following methods:– public double perimeter(); // doesn’t have any parameters, returns the perimeter of the shape.– public double area(); // doesn’t have any parameters, returnsthe area of the shape.– public void info(); // doesn’t have any parameters, prints theperimeter and area of the shape.• Circle class that implements Shape interface and has a constructorthat takes the radius.• Rectangle class that implements the Shape interface and has a constructor that takes the width and height.• Square class that extends the Rectangle class and has a constructorthat takes the edge length.– Square constructor should only call the super constructor withcorrect parameters.– Square constructor should not explicitly implement the Shapeclass, but it should inherit the perimeter, area and info methodsfrom the Rectangle class.2. Create a Test class, and create one Circle, one Rectangle and one Squareobjects.…
- Programing language is Java. Define a class Person that represents a person. People have a name, an age, anda phone number. Since people always have a name and an age, your class shouldhave a constructor that has those as parameters. Define a toString() method whichdisplays all of the relevant information using a format like this: “Jim Lahey - Age 57- Phone 9025555555”.Write a program in java . Create a class names “A” with a method to print “ method ofclass A”. • Then create three other classes names “B” ,”C” and “D” inheriting the class “A” all threeclasses having method to print “method of class “, “method of class c”, “method ofclass d” respectively.• Now call the method of “B” ,”C” and “D” by creating the object of B,C and Dclasses.in java create a class shopping mall. It has Items with name, manufacturer and price. Provide constructors. Getters, setters, toString methods. We add several items to Store. For that create a store class having name and object array of items, Provide Constructors, getters/setters and toString(), in addition you have to provide a method add which add new item to the array. The main function that does these things looks as follows: Public static void main(Strings[] args) { Item shampoo2(“pantene”, “Procter & Gamble”,100), noodles(“Noodles”, “knorr”, 50); // add further items. Store abcSuperStore; abcSuperStore.add(shampoo2); abcSuperStore.add(noodles); … abcSuperStore.sale(shampoo2); a bcSuperStore.sale(noodles);
- Write a Java program that consists of at least three classes for Students, Employees and Courses registration in University. The program should be fully documented, and the following concepts should be applied: Defining a constructor with and without arguments. Use the setter, getter and toString methods Sending an object/s to a method and returning it as a return value. Defining array of objects and using loop/s and Scanner object/s for data entry. Defining the main method that integrates the whole project.Implement the following using JAVA: a.Design a class named Person and its two subclasses named Student andEmployee. b.Make Faculty and Staff subclasses of Employee. Please note that,● A person has a name, address, phone number, and email address. A student has aclass status (freshman,sophomore, junior, or senior). You can define the status as aconstant.● An employee has office & salary.● A faculty member has office hours and a rank.● A staff member has a title. c. Draw a UML diagram of the system.in java create a class called publication that stores the title (a string) and price (type float) and date of a publication. Provide getters/setters and constructor also write an abstract method isOversize() .From this class derive two classes: book, which adds a page count (type int); and tape, which adds a playing time in minutes (type float). Each of the classes should have a getter/setters and constructors and provide definition to function called isOversize() to the book and tape classes. Let’s say that a book with more than 800 pages, or a tape with a playing time longer than 90 minutes (which would require two cassettes), is considered oversize. You can access this function from main() and display the string “Oversize” for oversize books and tapes when you display their other data.