OOP java assignment1 jazan university

public class EMP {

    // Attributes
    private int id;
    private String name;
    private double salary;
    public static int counter = 0;

    // Constructor
    public EMP(String name, double salary) {
        this.name = name;
        this.salary = salary;
        id = setId();
    }
    // Mutator methods
    public String getName() {
        return this.name;
    }
    public double getSalary() {
        return salary;
    }
    public int getId(){
        return id;
    }
    // Accessor methods
    public void setName(String name) {
        this.name = name;
    }
    public void setSalary(double salary) {
        this.salary = salary;
    }
    public static int setId(){
        counter++;
        return counter; 
    }   
    public void print(){
        System.out.println("Name : "+this.getName() +" Salary : "+ this.getSalary());
    }
}

public class DEPT {

    private int id;
    private String name;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

import java.util.*;

public class ORG {

    public static void main(String[] args) {

        // TODO code application logic here
        List<EMP> employees = new ArrayList<EMP>();
        EMP e1 = new EMP("Ahmad",500000);
        EMP e2 = new EMP("Ali",400000);
        EMP e3 = new EMP("Mohamad",400000);
        EMP e4 = new EMP("Maha",600000);
        EMP e5 = new EMP("Salem",800000);
        EMP e6 = new EMP("Jhon",1400000);
        EMP e7 = new EMP("Rami",400000);

        employees.add(e1);
        employees.add(e2);
        employees.add(e3);
        employees.add(e4);
        employees.add(e5);
        employees.add(e6);
        employees.add(e7);
        //Remove the object at index 3 
        employees.remove(3);
        //print out all the objects
        for(EMP e:employees){
            e.print();
        }
        //check wether the collection is empty or not
        if(employees.isEmpty())
            System.out.println("the employees collection is empty");
        else{
            System.out.println("the employees collection is not empty");
        }
        //Replace objects 3 with object 1
        employees.set(2,e1);
    }
}