Create an employee class(id,name,deptname,salary). Define a default and parameterized constructor. Use ‘this’ keyword to initialize instance variables. Keep a count of objects created. Create objects using parameterized constructor and display the object count after each object is created.(Use static member and method). Also display the contents of each object.

 

a) Create an employee class(id,name,deptname,salary). Define a default and

parameterized constructor. Use ‘this’ keyword to initialize instance variables.

Keep a count of objects created. Create objects using parameterized constructor

and display the object count after each object is created.(Use static member and

method). Also display the contents of each object.

import java.util.Scanner;
public class Employee {
int id;
String name;
String deptname;
float salary;
static int numberofobjects=0;
Employee(){
id=0;
name="";
deptname="";
salary=0;
}
Employee(int id,String name,String deptname,float salary ){
this.id=id;
this.name=name;
this.deptname=deptname;
this.salary=salary;
numberofobjects++;
}
public void display(){
System.out.println("Employee Id :"+id);
System.out.println("Employee name: "+name);
System.out.println("Employee Department: "+deptname);
System.out.println("Employee Salary :"+salary);
}
public static void main(String[] args){
int n=0;
Scanner sc=new Scanner(System.in);
System.out.print("How many employees you want to enter :");
n=sc.nextInt();
Employee[] ob=new Employee[n];
for(int i=0;i<n;i++){
sc= new Scanner(System.in);
System.out.println("Enter Id of employee "+(i+1)+" :");
int id=sc.nextInt();
System.out.println("Enter Name of employee "+(i+1)+" :");
sc.nextLine();
String name= sc.nextLine();
System.out.println("Enter dept name of employee "+(i+1)+" :");
String deptname=sc.nextLine();
System.out.println("Enter salary of employee "+(i+1)+" :");
float salary = sc.nextFloat();
ob[i]=new Employee(id,name,deptname,salary);
System.out.println("\nNumber of Objects : "+numberofobjects);

}
for(int i=0;i<n;i++)
{
ob[i].display();
}
}
}

Output:

How many employees you want to enter :2
Enter Id of employee 1 :
1
Enter Name of employee 1 :
rohit
Enter dept name of employee 1 :
abc
Enter salary of employee 1 :
1000000
Number of Objects : 1
Enter Id of employee 2 :
2
Enter Name of employee 2 :
bairwa
Enter dept name of employee 2 :
90000000
Enter salary of employee 2 :
78888888
Number of Objects : 2
Employee Id :1
Employee name: rohit
Employee Department: abc
Employee Salary :1000000.0
Employee Id :2
Employee name: bairwa
Employee Department: 90000000
Employee Salary :7.8888888E7