public void addEmailAdress(String anEmailAddress){
  if (mEmails.indexOf(anEmailAddress) < 0) {
    mEmails.add(anEmailAddress);
  }
}

public void addEmailAdress ( String anEmailAddress ) { if ( mEmails . indexOf ( anEmailAddress ) < 0 ) { mEmails . add ( anEmailAddress ) ; } }
add an email address to the list .
