code: @Deprecated public static double[][] readMatrixArray(File input, 
                                                           Format format) 
              throws IOException {
          // Use the same code path for reading the Matrix object and then dump to
          // an array.  This comes at a potential 2X space usage, but greatly
          // reduces the possibilities for bugs.
          return readMatrix(input, format).toDenseArray();
      }
docs: Reads in the content of the file as a two dimensional Java array matrix.
  This method has been deprecated in favor of using purely {@link Matrix}
  objects for all operations.  If a Java array is needed, the {@link
  Matrix#toArray()} method may be used to generate one.
  
  @return a two-dimensional array of the matrix contained in provided file