### Question:
CellCoordinate { public static CellCoordinate fromCellId(String cellId) { CellCoordinate coordinate = new CellCoordinate(); if (cellId != null) { coordinate.setRowIndex(getRowIndex(cellId)); coordinate.setColumnIndex(getColumnIndex(cellId)); } return coordinate; } CellCoordinate(); static CellCoordinate fromCellId(String cellId); static String getColumnName(int columnIndex); static String getColumnName(int columnIndex, int columnStartIndex, String ... columnNames); int getRowIndex(); void setRowIndex(int rowIndex); int getColumnIndex(); void setColumnIndex(int columnIndex);  }### Answer:
@Test public void testFromCellId() { CellCoordinate coordinate = CellCoordinate.fromCellId(cellId); Assert.assertEquals(rowIndexCheck, coordinate.getRowIndex()); Assert.assertEquals(columnIndexCheck, coordinate.getColumnIndex()); }