### Question:
StringUtils { public static String fromByte(Byte b) { return Byte.toString(b); }  static Integer toInteger(StringBuilder value); static String toString(StringBuilder value); static Boolean toBoolean(StringBuilder value); static String fromInteger(Integer value); static String fromLong(Long value); static String fromString(String value); static String fromBoolean(Boolean value); static String fromBigInteger(BigInteger value); static String fromBigDecimal(BigDecimal value); static BigInteger toBigInteger(String s); static BigDecimal toBigDecimal(String s); static String fromFloat(Float value); static String fromDate(Date value); static String fromDouble(Double d); static String fromByte(Byte b); static String fromByteBuffer(ByteBuffer byteBuffer); static String replace(String originalString, String partToMatch, String replacement); static String join(String joiner, String... parts); static String lowerCase(String str); static String upperCase(String str); @SuppressWarnings("checkstyle:innerassignment") static boolean isBlank(final CharSequence cs); static final Charset UTF8; }### Answer:
@Test public void testFromByte() { assertEquals("123", StringUtils.fromByte(new Byte("123"))); assertEquals("-99", StringUtils.fromByte(new Byte("-99"))); }