Question

Create a Java application, that support the following:

• Create an Employee class, which holds following information:
  • Employee First Name
  • Employee Last Name
  • Employee Phone Number
  • Employee Address
  • Employee id
  • Employee Title
  • Employee salary
• Create an application that uses the Employee class
  • Constructors –Getters and setters
    • A minimum of 3 constructors including default constructor
  • equals() method
  • Helper methods
  • toString() method
• Create an array of 5 Employee objects
• Use a Scanner to read in 5 employee information
• Change 2 employees information (3-items each)
• Create an Employee report at the end using appropriate class methods, to generate the report

Answer 1

/ The java test program that demonstrates the the Employee class
* the program prompts user to enter the first ,last names, id, salary and title
* as inputs from user for 5 employees and then display the results to console
* output window.
/
//TestEmployee.java
import java.util.Scanner;
public class TestEmployee
{
public static void main(String[] args)
{
String firstName;
String lastName;
int id;
double salary;
String title;
/*Create an array of Employee class of size,5*/
Employee [] emps=new Employee[5];
//create an instance of Scanner class
Scanner scanner=new Scanner(System.in);
/*Read employee details */
for (int i = 0; i < emps.length; i++)
{
System.out.printf("Enter the first name : ");
firstName=scanner.nextLine();
System.out.printf("Enter the last name : ");
lastName=scanner.nextLine();
System.out.printf("Enter the id : ");
id=Integer.parseInt(scanner.nextLine());
System.out.printf("Enter the salary : ");
salary=Double.parseDouble(scanner.nextLine());
System.out.printf("Enter the title : ");
title=scanner.nextLine();
emps[i]=new Employee(firstName, lastName, id, salary, title);
}
System.out.println("Employee object details ");
for (int i = 0; i < emps.length; i++)
{
System.out.println(emps[i].toString());
}

}//end of the main method
}//end of the class

------------------------------------------------------------------------

public class Employee
{
private String firstName;
private String lastName;
private int id;
private double salary;
private String title;

public Employee()
{
this.firstName = "unknown";
this.lastName = "unknown";
this.id = 0;
this.salary = 0;
this.title = "unknown";;
}
public Employee(String firstName, String lastName, int id)
{
this.firstName = firstName;
this.lastName = lastName;
this.id = id;
this.salary = 0;
this.title = "unknown";;
}
public Employee(String firstName, String lastName, int id, double salary, String title) {
this.firstName = firstName;
this.lastName = lastName;
this.id = id;
this.salary = salary;
this.title = title;
}
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 int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public double getSalary() {
return salary;
}
public void setSalary(double salary) {
this.salary = salary;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}

//Override
public String toString() {
String str="";
str="Name : "+firstName+" "+lastName+
"\nID : "+id+
"\nTitle : "+title+
"\nSalary"+salary;

return str;
}
//Override
public boolean equals(Object obj) {
Employee other=(Employee)obj;
return firstName.equals(other.getFirstName()) &&
lastName.equals(other.getLastName()) &&
title.equals(other.getTitle()) &&
id==other.getId() &&
salary==other.getSalary() ;
}
}

------------------------------------------------------------------------

Sample Output:
Enter the first name : john
Enter the last name : M
Enter the id : 1234
Enter the salary : 25000
Enter the title : Doctor
Enter the first name : Karim
Enter the last name : A
Enter the id : 1235
Enter the salary : 35000
Enter the title : Accountant
Enter the first name : Marsh
Enter the last name : King
Enter the id : 12365
Enter the salary : 45000
Enter the title : Scientist
Enter the first name : jumar
Enter the last name : gul
Enter the id : 123658
Enter the salary : 85000
Enter the title : Director
Enter the first name : Sundar
Enter the last name : Pichiai
Enter the id : 2568
Enter the salary : 960000
Enter the title : CEO
Employee object details
Name : john M
ID : 1234
Title : Doctor
Salary25000.0
Name : Karim A
ID : 1235
Title : Accountant
Salary35000.0
Name : Marsh King
ID : 12365
Title : Scientist
Salary45000.0
Name : jumar gul
ID : 123658
Title : Director
Salary85000.0
Name : Sundar Pichiai
ID : 2568
Title : CEO
Salary960000.0

UML class diagram: