### Question:
CsvIterator implements Iterator<String[]> { public void remove() { throw new UnsupportedOperationException("This is a read only iterator."); } CsvIterator(CsvReader reader); boolean hasNext(); String[] next(); void remove();  }### Answer:
@Test(expected = UnsupportedOperationException.class) public void removethrowsUnsupportedOperationException() { iterator.remove(); }