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Programming language.

Create a class called Employee that includes three pieces of information as instance variables — a first name (type string), a last name (type string) and a monthly salary (double). Your class should have two constructors, one default and one that initializes the three values. Provide the properties with a get and set accessor for all instance variables. If the monthly salary is negative, the set accessor should leave the instance variable unchanged.
Write a test application named EmployeeTest that demonstrates class Employee’s capabilities. Create two Employee objects and display each object’s yearly salary. Then give each Employee a 10% raise and display each Employee’s yearly salary again.

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Sample Answer

 

 

here is a class called Employee that includes three pieces of information as instance variables — a first name (type string), a last name (type string) and a monthly salary (double). Your class should have two constructors, one default and one that initializes the three values. Provide the properties with a get and set accessor for all instance variables. If the monthly salary is negative, the set accessor should leave the instance variable unchanged.  Write a test application named EmployeeTest that demonstrates class Employee’s capabilities. Create two Employee objects and display each object’s yearly salary. Then give each Employee a 10% raise and display each Employee’s yearly salary again.

Full Answer Section

 

 

Java
public
class
Employee
{

    private String firstName;
    private String lastName;
    private
double monthlySalary;

    public
Employee() {
    }

    public
Employee(String firstName, String lastName, double monthlySalary)
{
        this.firstName = firstName;
        this.lastName = lastName;
        if (monthlySalary >= 0) {
            this.monthlySalary = monthlySalary;
        }
    }

    public String getFirstName()
{
        return firstName;
    }

    public
void
setFirstName(String firstName)
{
        this.firstName = firstName;
    }

    public String getLastName()
{
        return lastName;
    }

    public
void
setLastName(String lastName)
{
        this.lastName = lastName;
    }

    public double
getMonthlySalary()
{
        return monthlySalary;
    }

    public
void
setMonthlySalary(double monthlySalary)
{
        if (monthlySalary >= 0) {
            this.monthlySalary = monthlySalary;
        }
    }

    public
double
getYearlySalary() {
        return monthlySalary * 12;
    }
}

public
class
EmployeeTest
{

    public
static
void
main(String[] args)
{
        Employee employee1 = new Employee("John", "Doe", 5000);
        Employee employee2 = new Employee("Jane", "Smith", 6000);

        System.out.println("Employee 1:");
        System.out.println("First Name:", employee1.getFirstName());
        System.out.println("Last Name:", employee1.getLastName());
        System.out.println("Monthly Salary:", employee1.getMonthlySalary());
        System.out.println("Yearly Salary:", employee1.getYearlySalary());

        System.out.println("\nEmployee 2:");
        System.out.println("First Name:", employee2.getFirstName());
        System.out.println("Last Name:", employee2.getLastName());
        System.out.println("Monthly Salary:", employee2.getMonthlySalary());
        System.out.println("Yearly Salary:", employee2.getYearlySalary());

        System.out.println("\nGiving employees a 10% raise:");

        employee1.setMonthlySalary(employee1.getMonthlySalary() * 1.1);
        employee2.setMonthlySalary(employee2.getMonthlySalary() * 1.1);

        System.out.println("\nEmployee 1:");
        System.out.println("First Name:", employee1.getFirstName());
        System.out.println("Last Name:", employee1.getLastName());
        System.out.println("Monthly Salary:", employee1.getMonthlySalary());
        System.out.println("Yearly Salary:", employee1.getYearlySalary());

        System.out.println("\nEmployee 2:");
        System.out.println("First Name:", employee2.getFirstName());
        System.out.println("Last Name:", employee2.getLastName());
        System.out.println("Monthly Salary:", employee2.getMonthlySalary());
        System.out.println("Yearly Salary:", employee2.getYearlySalary());
    }
}
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This code will create two Employee objects and display each object’s yearly salary. Then it will give each Employee a 10% raise and display each Employee’s yearly salary again.

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