Write a Java enumeration LetterGrade that represents letter grades A through F, including plus and minus grades. Define a private instance variable to hold a boolean value that is true if the grade is passing. Also, define a constructor that initializes this instance variable, an accessor method isPassing to return its value, and a method toString that returns the grade as a string. Finally, write a
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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.arrow_forwardwrite a java program A course has a name, a course number, a department code(for example, CS, MATH) and a room number.• Include a static variable used to assign the course number to each Course in theconstructor. The value of the variable will start at 1000.• Write the instance variables, the accessors (getters), the mutators (setters) and twoconstructors for the class. One of the constructors should be the no args constructorWrite a second class, XXX_ TestCourse (XXX is your Kean Id) ,which will have amain method.• Create an Array of Course objects, which can hold 3 elements.• Using a loop:• Ask the user for the name, department and room number for 3 courses.• Create course objects.• Store the objects in the Array• At the end, traverse the array of courses and print each course on a separate linearrow_forward6. Write a class with a constructor that accepts a String object as its argument. The class should have a method that returns the number of b, c, d, f, g, h, and z in the string. Demonstrate the class in a program that asks the user to enter a string and returns the number of b, c, d, f, g, h, and z in the user string.arrow_forward
- Write a class that implements Employee class that is described in UML diagram given below. The method “ raiseSalary(percent) " increases the salary by the given percentage. Write a test program that will generate at least 3 accounts and test each method that you write. Employee -id:int -firstName:String -lastName:String -salary:int +Employee(id:int, firstName:String, lastName:String, salary:int) +getID():int +getFirstName():String +getLastName():String +getName():String +getSalary():int +setSalary(salary:int):void +getAnnualSalary():int • +raiseSalary(int percent):int +tostring():String. "firstName Llastname" salary * 12 Increase the salary by the percent and return the new salary "Employee[id=?,name=firstName lastname,salary=?]"arrow_forward1/ Implement a class Employee. An employee has a name (a string) and a salary (a double). Provide a constructor with two arguments public Employee(String employeeName, double currentSalary) and methods public String getName() public double getSalary() public void raiseSalary(double byPercent) These methods return the name and salary, and raise the employee's salary by a certain percentage. Sample usage: Employee harry = new Employee("Hacker, Harry", 50000); harry.raiseSalary(10); // Harry gets a 10 percent raise Supply an EmployeeTester class that tests all methods. 2/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. Supply a method drive that simulates driving the car for a certain distance, reducing the amount of gasoline in the fuel tank. Also supply methods…arrow_forwardPrograming 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”.arrow_forward
- Design a class named Person with properties for holding a person’s name, address, and telephone number. Next, design a class named Customer, which is derived from the Person class. The Customer class should have a property for a customer number and a Boolean property indicating whether the customer wishes to be on a mailing list. Demonstrate an object of the Customer class in a simple application.arrow_forwardFor the Employee class, create the following: A private String instance variable m name. A private string instance variable m department. A constructor that takes two parameters (in the order of name, department) and sets the instance variables. A getter method for m name and a getter method for m department. An abstract string method named getPaycheck that does not take any parameter.arrow_forwardWrite Java code for a Baby class. 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 their names…arrow_forward
- 1/ Write a BankAccountTester class whose main method constructs a bank account, deposits $1,000, withdraws $500, withdraws another $400, and then prints the remaining balance. Also print the expected result 2/ Implement a class Employee. An employee has a name (a string) and a salary (a double). Provide a constructor with two arguments public Employee(String employeeName, double currentSalary) and methods public String getName() public double getSalary() public void raiseSalary(double byPercent) These methods return the name and salary, and raise the employee's salary by a certain percentage. Sample usage: Employee harry = new Employee("Hacker, Harry", 50000); harry.raiseSalary(10); // Harry gets a 10 percent raise Supply an EmployeeTester class that tests all methods. 3/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…arrow_forwardUsing python: Suppose a call center has three levels of employees—respondent, manager, and director. An incoming telephone call must first be allocated to a respondent who is free. If the respondent cannot handle the call, the call must be escalated to a manager. If the manager is occupied, then the call should be escalated to a director. Design YOUR OWN classes and data structures for this problem. Implement a method dispatchCall() that assigns a call to the first available employee.arrow_forward30. True or False: The parameterized constructors of Java does not accept any parameters instead, using these constructors the instance variables of a method will be initialized with fixed values for all objects. False True Give an explanation for the answer. Thank youarrow_forward
- C++ Programming: From Problem Analysis to Program...Computer ScienceISBN:9781337102087Author:D. S. MalikPublisher:Cengage Learning