Question

Question 1 (Employee): Base Class Information                                                          10 Points

1. Create a class called Employee that should include four pieces of information as instance variables—a firstName (type String), a lastName (type String), a mobileNumber (type String) and a salary (type int).
2. Your class (Employee) should have a full argument constructor that initializes the four instance variables.
3. Provide a set and a get method for each instance variable. The validation for each attribute should be like below:
   1. mobileNumber should be started from “05” and the length will be limited to 10 digits.
   2. salary should be greater than zero.
4. In addition, provide a method named getYearlySalary() that calculates the yearly salary (i.e., multiplies the salary by 12), then returns the amount as a double value.
5. The toString() print the following information

Employee Name: FirstName LastName

Mobile No. 0512345678

Employee Salary: 2000

Answer 1

Since you have not provided the language, I am providing the code in Java.

CODE

class Employee {
    private String firstName, lastName, mobileNumber;
    private int salary;

    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 String getMobileNumber() {
        return mobileNumber;
    }

    public void setMobileNumber(String mobileNumber) {
        if (mobileNumber.length() == 10 && mobileNumber.startsWith("05")) {
            this.mobileNumber = mobileNumber;
        }
        throw new IllegalArgumentException("Invalid mobile number....");
    }

    public int getSalary() {
        return salary;
    }

    public void setSalary(int salary) {
        if (salary > 0) {
            this.salary = salary;
        }
        throw new IllegalArgumentException("Invalid salary....");
    }

    public double getYearlySalary() {
        return 12.0 * salary;
    }

    @Override
    public String toString() {
        return "Employee Name: " + firstName + " " + lastName + "\n" +
                "Mobile No,: '" + mobileNumber + '\'' +
                "Employee Salary: " + salary;
    }
}