public void addRevision(int revnumber,String date,String authorinitials,String revremark){
  Revision r=new Revision();
  r.revnumber=revnumber;
  r.date=date;
  r.authorinitials=authorinitials;
  r.revremark=revremark;
  list.add(r);
}

public void addRevision ( int revnumber , String date , String authorinitials , String revremark ) { Revision r = new Revision ( ) ; r . revnumber = revnumber ; r . date = date ; r . authorinitials = authorinitials ; r . revremark = revremark ; list . add ( r ) ; }
used to add a revision form complete information created elsewhere
