Question

1) Create a class called Employee that includes three instance variables — a first name (type String), a last name (type String) and a monthly salary (double). Provide a constructor that initializes the three instance variables. Provide a set and a get method for each instance variable. If the monthly salary is not positive, do not set its value.

2)Create an app named EmployeeLinkedList that stores a collection of Employee objects in a LinkedList<Employee>. Test the app by creating five Employee objects and adding the Employees to the LinkedList<Employee> , then re-access the LinkedList<Employee> to display each Employee object’s yearly salary. Then give each Employee a 10% raise and display each Employee’s yearly salary again.

Provide one java program with two different classes. the program should be working and display output. need it ASAP

Answer 1

import java.util.LinkedList;

class Employee {

        private String first, last;
        private double salary;

        public Employee(String first, String last, double salary) {
                this.first = first;
                this.last = last;
                setSalary(salary);
        }

        public String getFirst() {
                return first;
        }

        public void setFirst(String first) {
                this.first = first;
        }

        public String getLast() {
                return last;
        }

        public void setLast(String last) {
                this.last = last;
        }

        public double getSalary() {
                return salary;
        }

        public void setSalary(double salary) {
                if (salary >= 0)
                        this.salary = salary;
        }

        @Override
        public String toString() {
                return first + ", " + last + " Sal: $" + salary;
        }

        public void raiseSalary(double times) {
                salary += salary * times;
        }
}

public class EmployeeLinkedList {

        public static void main(String[] args) {
                LinkedList<Employee> empList = new LinkedList<>();
                empList.add(new Employee("EmpF1", "EmpL1", 10000));
                empList.add(new Employee("EmpF2", "EmpL2", 20000));
                empList.add(new Employee("EmpF3", "EmpL3", 14000));
                empList.add(new Employee("EmpF4", "EmpL4", 16000));
                empList.add(new Employee("EmpF5", "EmpL5", 8000));
                
                for(Employee e: empList) {
                        System.out.println(e);
                }
                
                // give raise.
                System.out.println("\nAfter raising salary");
                for(Employee e: empList) {
                        e.raiseSalary(0.1);
                        System.out.println(e);
                }
        }

}

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