question: public DoubleColumn ( int nrows , int capacity , double defaultValue ) { super ( double . class , new Double ( defaultValue ) ) ; if ( capacity < nrows ) { throw new IllegalArgumentException ( "Capacity value can not be less than the row count." ) ; } m_values = new double [ capacity ] ; Arrays . fill ( m_values , defaultValue ) ; m_size = nrows ; }
target:  Create a new DoubleColumn. 