non-important

public String selectCategoryByID( int id ){
    String name = "";
    synchronized( this ){
        if( connect() ){
            try {
                state = con.prepareStatement("select * from airplanecategory where id = ?");
                state.setInt(1, id);
                result = state.executeQuery();

                while( result.next() )
                    name = result.getString( "genre" );
            } catch( SQLException e ){
                throw new DataAccessException("");
            } finally {
                disconnect();
            }
        }
    }
    return name;
}