public synchronized void deleteAllTables(){
  List<String> tableNames=new ArrayList<String>(tableLookup.keySet());
  for (  String s : tableNames) {
    deleteTable(s);
  }
}

public synchronized void deleteAllTables ( ) { List < String > tableNames = new ArrayList < String > ( tableLookup . keySet ( ) ) ; for ( String s : tableNames ) { deleteTable ( s ) ; } }
delete all tables from this database .
