/** A class that encapsulates information about and messages to
 ** send to Employee objects.
 **/
public class Employee {

  public static void main (String [] args) {
    // create a single instance of the Employee class,
    Employee anEmp = new Employee("Joe Student");

    // assign a name and a salary value (any value), using the constructor
    // and the setSalary() methods
    anEmp.setSalary(50000.);

    // Access the current salary value (using the getSalary() method)
    double current = anEmp.getSalary();

    // and increase the Employee's salary by 10% using the
    // setSalary method again.
    current = current + (current * .1);
    anEmp.setSalary(current);

    // then have the Employee object identify itself and it's
    // current salary value.
    System.out.println(anEmp);
  }

  private String name;
  private double salary;
  private Employee boss;
  
  /** a public constructor for the class that will insure that Employee
      objects always have a name field
  **/
  public Employee( String empName) {
    name = empName;
  }

  public String getName() {
    return name;
  }

  /** a method to set an Employee object's salary field 
   **/
  public void setSalary( double value ) {
    salary = value;
  }

  /** a method to get an Employee object's current salary field  value
   **/
  public double getSalary( ) {
    return salary;
  }

  /** a method to set an Employee object's field referencing another 
      Employee object
  **/
  public void setBoss ( Employee boss ) {
    this.boss = boss;
  }

  /** a method to return a String identifying the field contents of an 
      Employee
  **/
  public String toString() {
    return name + " salary:" + salary;
  }
}