### Question:
BooleanUtil { public static boolean isFalse(final Boolean b) { return b != null && !b; } private  BooleanUtil(); static boolean ifTrue(final Boolean bool, final Runnable runnable); static boolean isTrueOrNull(final Boolean b); static boolean isFalseOrNull(final Boolean b); static boolean isTrue(final Boolean b); static boolean isFalse(final Boolean b); static boolean isTrue(final String str);  }### Answer:
@Test public void testIsFalse() { assertFalse("null", BooleanUtil.isFalse((Boolean) null)); assertFalse("Boolean.TRUE", BooleanUtil.isFalse(Boolean.TRUE)); assertTrue("Boolean.FALSE", BooleanUtil.isFalse(Boolean.FALSE)); }