Constantes "jdbc"

alguem poderia me dizer o que essas constantes significam;
	
ResultSet result;
						result.HOLD_CURSORS_OVER_COMMIT;
							result.CLOSE_CURSORS_AT_COMMIT;
							result.CONCUR_READ_ONLY;
							result.CONCUR_UPDATABLE;
							result.FETCH_FORWARD;
							result.FETCH_REVERSE;
							result.FETCH_UNKNOWN;
							result.TYPE_SCROLL_INSENSITIVE;
							result.TYPE_SCROLL_SENSITIVE;
	
                 result.TYPE_FORWARD_ONLY;				
	result.HOLD_CURSORS_OVER_COMMIT;