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 a working java code and also display the output. NEED IT ASAP

Answer 1

Code :

public class EmployeeLinkedList

{

Employee head; // head of list

/* Linked list Employee*/

class Employee

{

String fName;

String lName;

double data;

Employee next;

  

// Constructor

Employee(String fN, String lN, double d) {

fName = fN;   

lName = lN;

data = d;

next = null;

}

}

/* Inserts a new Node at front of the list. */

public void push(String new_fN, String new_lN, double new_data)

{

/* 1 & 2: Allocate the Node &

Put in the data*/

Employee new_node = new Employee(new_fN, new_lN, new_data);

/* 3. Make next of new Node as head */

new_node.next = head;

/* 4. Move the head to point to new Node */

head = new_node;

}

/* This function raises each salary by 10% */

public void salRaise()

{

Employee tnode = head;

while (tnode != null)

{

tnode.data *= 1.1 ;

tnode = tnode.next;

}

}

/* This function prints contents of linked list starting from

the given node */

public void printList()

{

Employee tnode = head;

while (tnode != null)

{

System.out.print(tnode.fName + " " + tnode.lName + " ");

System.out.printf("%.2f\n", tnode.data);

tnode = tnode.next;

}

}

/* Driver program to test above functions. */

public static void main(String[] args)

{

/* Start with the empty list */

EmployeeLinkedList llist = new EmployeeLinkedList();

// Insert at the linked list

llist.push("Chandler", "Bing", 100000);

llist.push("Joey", "Tribbiani",200000);

llist.push("Ross", "Geller",300000);

llist.push("Pheobe", "Buffay",400000);

llist.push("Rachel", "Green",500000);

System.out.println("\n\nCreated Linked list is: ");

llist.printList();

System.out.println("\n\nGiving everyone a raise of 10%");

llist.salRaise();

System.out.println("\n\nUpdated Linked list is: ");

llist.printList();

}

}

Output Screenshot: