### Question:
CharacterProperties { @Override public boolean equals(Object obj) { if (this == obj) { return true; } else if (obj == null) { return false; } else if (!(obj instanceof CharacterProperties)) { return false; } CharacterProperties other = (CharacterProperties) obj; if (isAlpha() != other.isAlpha()) { return false; } else if (isDigit() != other.isDigit()) { return false; } else if (isLower() != other.isLower()) { return false; } else if (isPunctuation() != other.isPunctuation()) { return false; } return isUpper() == other.isUpper(); } private  CharacterProperties(byte code);  CharacterProperties(boolean isAlpha, boolean isDigit,
            boolean isUpper, boolean isLower, boolean isPunctuation); static CharacterProperties forByteCode(byte code); static CharacterProperties forHexString(String hexString); static CharacterProperties forCharacter(char c); static CharacterProperties forString(String cs); boolean isAlpha(); boolean isLower(); boolean isUpper(); boolean isDigit(); boolean isPunctuation(); byte toByteCode(); String toHexString(); @Override String toString(); @Override int hashCode(); @Override boolean equals(Object obj);  }### Answer:
@Test public void testEquals() { assertEquals(b.equals(b), true); assertEquals(b.equals(W), false); }