2. Suppose class called Student that defines three instance variables: name (string), age (integer), mark1, mark2 and mark3 (double) And three methods: • readinfo for read data for student. printinfo for print student name and average. average for return average of three marks (mark1, mark2 and mark3). Write a program that test methods in the class.
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- Write a complete program for the description given below. Consider a Billing class that implements an interface Payable having a method getTotalPayment Amount(). Besides this, you have a Doctor class with private instance variables (docID, docName, and docFee) and a public getDoc() method, Patient class with private instance variables (pName, pID. pDisease), Medicine class with private instance variables (medID, medName, medQty, medPrice), and Medical Test class with private instance variables (testID, testName, testPrice). Each of these classes has the toString() method to display the information of its object. The Billing class is having "Has A" relationship with the other four classes (Doctor, Patient, Medicine, and MedicalTest) mentioned above. The getPayment Amount() method of Billing class returns the total billing amount that includes doc fee, medicine cost, and medical test fee that a patient has to pay. After implementing these classes, you are required to do the following in…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 for a class named Baby. A Baby has a name of type String and an ageof type integer.Supply two constructors: one will be the default constructor, that just setsdefault values for the name and age; the second constructor will take twoparameters, a string to set the name and an integer to set the age. Also, supplymethods for setting the name, setting the age, getting the name and getting theage.The class should not contain I/O methods; input of values to the instancevariables must be done with a set method or constructor, output of values fromthe instance variables must be done with get methods. The set method for thename instance variable should ensure that the input is not empty or containwhitespaces (otherwise set a default value). The set method for the ageinstance variable should validate the input to be between 1 and 4 inclusive(otherwise set a default value).Give Java code for an equals method for the Baby class. Babies count asbeing the same (i.e. equal) if…
- use Java. Given the following class. public class FamilyMember { public String drink( ) {return “cup”;} public String eat( ) {return “fork”;} } Write a Baby class that is derived from the FamilyMember class. The Baby class has an instance variable for the age, a default constructor, and a constructor that accepts an integer. Include any other necessary methods. If a baby is older than 3 years, print that “it eats with its fork”; otherwise, “it eats with its hands”.box1 and box2 are instances of the Box class. Attributes length, width, and height of both box1 and box2 are read from input. Then, two strings are read from input. In the Box class, define instance method print_measurements() with self and one string as parameters to output the string parameter in one line, and the following in the next line: The value of attribute length ' by ' The value of attribute width ' by ' The value of attribute heightIN C++ Implement a class Car with the following properties. A car has a certain fuel efficiency (measured in miles/gallon or liters/km—pick one) and a certain amount of fuel in the gas tank. The efficiency is specified in the constructor, and the initial fuel level is 0. Provide another parameterized constructor which takes both efficiency and fuel as parameters. Also supply methods getGasInTank, returning the current amount of gasoline in the fuel tank. getEfficiency() return the efficiency of car. setGasInTank(double fuel), to add gasoline to the fuel tank. setEfficiency(double efficiency) Supply a method Drive () that simulates driving the car for a certain distance, reducing the amount of gasoline in the fuel tank according to its efficiency. Sample usage: Car myHybrid (50); // 50 miles per gallon myHybrid.addGas(20); // Tank 20 gallons myHybrid.Drive(100); // Drive 100 miles double gasLeft = myHybrid.getGasInTank(); // Get gas remaining in tank Supply a main method that tests…
- write the following 3 classes for the Java program so that this program produces the sample output shown at the end of Main. ElectricCar: a vehicle with a limited range. So it must be a subclass of Vehicle, and it must implement LimitedRange. Thus it needs an instance variable for its range, and a travel method (required by Vehicle. Please use @Override) that outputs "Zoom!" if it has enough range to go the distance specified (and update its range). It must have a constructor with 3 arguments as called by main. It also needs a getCurrentRange method as required by LimitedRange (use @Override for this too). Motorboat: a vehicle with a limited range. So it is similar to ElectricCar, but it outputs "Wisshhh!" when it goes. Sailboat: a vehicle that doesn't have a limited range. So it is a subclass of Vehicle, but doesn't implement LimitedRange. It can go any distance, and outputs "Weee!" when it travels. Code: class Main { publicstaticvoid main(String[] args) { Vehicle[]…Suppose Child is a class derived from Parent. To call a method in Parent from Child, we use: a) super b) private c) public d) protectedWrite a java program that has:A class University that has:- Three private instance variables named firstName, lastName, and id- A constructor to initialize the three instance variables- A toString method to return: “Welcome,” + firstName +” “ + lastName + “Your ID is ” + id- AccessorsA subclass Employee that has:- Five additional private instance variables named department, rate, bonus, hours, and salary- An appropriate constructor to use constructor of superclass in defining those of the subclass- A method named compteSalary ( ) to return salary- A method named computeBonus ( ) to return bonus- Accessors A subclass Staff that:- Overrides computeBonus ( ) such that if hours are greater than 40, there will be %10 bonus for each additional houradded to salary- Overrides compteSalary ( ) such that salary = (rate * hours) + bonus- Overrides toString method to add department and salary into the outputA subclass Faculty that:- Overrides computeBonus ( ) such that if hours are greater than…
- a) Implement a class Point with three attributes, x, y, and z.b) Implement an init method with an optional parameter type: 1) Set the default value of x, y, and z to 0.c) Implement a display method to print the values of x, y, and z as the example output below.d) Instantiate two objects of type Point, one with arguments,1, 2, and 3, and the other one without any arguments.e) Call display() to print x, y, and z. Example Output(x, y, z): (1, 2, 3)(x, y, z) : (0, 0, 0)Write a program that would print the information (name, year of joining, salary, address) of three employees by creating a class named 'Employee'. The output should be as follows:Name Year of joining AddressRobert 1994 64C- WallsStreatSam 2000 68D- WallsStreatJohn 1999 26B- WallsStreatIn Java Programming: Example, 8-8, defined the class Person to store the name of a person. The methods that we included merely set the name and print the name of a person. Redefine the class Person so that, in addition to what the existing class does, ypu can: 1. Set the last name only. 2. Set the first name only. 3 Set the middle name. 4. Check whether a given last name is the same as the last name of this person. 5. Check wether a given first name is the same as the first name of this person. 6. Check whether a given middle name is the same as the middle name of thi person. 7. Add the method equals that returns true if two objects contain the same first, middle, and last name. 8. Add the method makeCopy that copies the instance variables of a Person object into another Person object. 9. Add the method getCopy that creates and returns the address of the object, which is a copy of another Person object. 10. Add a copy constructor. 11. Write the definitions of the methods of the class…