*/
protected Table(int nrows, int ncols, Class tupleType) {
m_listeners = new CopyOnWriteArrayList();
m_columns = new ArrayList(ncols);
m_names = new ArrayList(ncols);
m_rows = new RowManager(this);
m_entries = new HashMap(ncols+5);
m_tuples = new TupleManager(this, null, tupleType);
if ( nrows > 0 )
addRows(nrows);