### Question:
ParseByte implements IsParser<Byte> { @Override public Byte parse(Object o, Field field) { return isValid(o) ? Byte.valueOf(o.toString()) : null; }  @Override Byte parse(Object o, Field field); @Override void setCell(Byte o, Cell cell, Field field);  }### Answer:
@Test public void parse() throws Exception { Byte actual = parseByte.parse(null, null); assertEquals(null, actual); actual = parseByte.parse(expected, null); assertEquals(Byte.valueOf(expected), actual); }