package JavaLinkedListDemo;

public class Professor {

  /** professor's last name */
  private String strLastName ;

  /** professor's first name */
  private String strFirstName ;

  /** professor's e-mail address */
  private String strEmailAddress ;

  /** professor's specialty */
  private String strSpecialty ;

  /** default constructor.
   *  This constructor calls the four-parameter constructor with four empty string values.
   */
  public Professor() {
    this( "", "", "", "" ) ;  // call 4-parameter constructor with defaults
  }

  /** two-parameter constructor.
   *  This constructor calls the four-parameter constructor with empty string values for the
   *  third and fourth parameters (the professor's e-mail address and specialty).
   *  @param strLastName professor's last name
   *  @param strFirstName professor's first name
   */
  public Professor(
      String strLastName, String strFirstName )
  {
    // call 4-parameter constructor with defaults for third and fourth parameters
    this( strLastName, strFirstName, "", "" ) ;  
  }

  /** four-parameter constructor.
   *  This is the standard constructor for a Professor object
   *  @param strLastName professor's last name
   *  @param strFirstName professor's first name
   *  @param strEmailAddress professor's e-mail address
   *  @param strSpecialty professor's specialty
   */
  public Professor(
      String strLastName, String strFirstName, String strEmailAddress, String strSpecialty )
  {
    this.strLastName = strLastName ;     // save data passed in parameters
    this.strFirstName = strFirstName ;
    this.strEmailAddress = strEmailAddress ;
    this.strSpecialty = strSpecialty ;
  }

  /** String representation of a Professor object 
   *  @return components of a Professor object within square brackets
   */
  public String toString() {
    return "[ " + strLastName + ", " + strFirstName + ", "
                + strEmailAddress + ", " + strSpecialty + " ]" ;
  }
}