Add Object To Array

I need to add an employee object that my program has created and put it in a array list. My employee object is first name, last name, and a generated id. I am trying to add a new employee object to an array like this:

public static Employee addEmployees(String first,String last) //this method is in my employee class
{
Employee employee = new Employee(firstName,lastName);
employee.setFirstName(firstName);
employee.setLastName(lastName);
employee.getId();
employeefile.addEntry(employee); //add employee object to array list

[code]...

how to println it to test, but I can't seem to do that or know which class to put this function in. I know about for loops and such, just don't know how to implement it or where.