Java Constructor of a class with fields that are are end user fed

My question is: What is the best way to write the constructor of a Java class with fields that are initialized through stdin?

For example suppose that I have an Employee class that looks like:

Public class Employee {
private int empID;
private String empName;
private List<Role> empRoles;
{....}

}

I can write all the setters and getters for this class. Of course, the Role class will have its own file.

Also suppose that I make my setters for the first two fields as follows, in order to enable the end user to initialize the fields:

public void setEmpID() {
System.out.println("Please enter the employee ID");
Scanner s = new Scanner (System.in);
this.empID = s.nextInt();

public void setEmpName() {
System.out.println("Please enter the employee name");
Scanner s = new Scanner (System.in);
this.empName = s.next();

} }

then:

1. Can I use such setters in a constructor that overrides the default constructor.
2. Is this the best way to write such constructors?

3. Is it better to move the Scanner object I am creating in each setter to the constructor and make it as an argument for the setters (e.g:

   public void setEmpName(Scanner s) { ... this.empName = s.next(); }

)?

As you can see, this may be a design question rather than just "coding".

Many thanks for your help.