[JDK17] ToStringBuilder.reflectionToString fails with InaccessibleObjectException on java.lang classes

System.out.println("boom = " + ToStringBuilder.reflectionToString(Set.of(123))); 

ReflectionToStringBuilder jdk17SafeToStringBuilder = new ReflectionToStringBuilder(obj) {
    protected void appendFieldsIn(final Class<?> clazz) {
        if (clazz.isArray()) {
            this.reflectionAppendArray(this.getObject());
            return;
        }
        // The elements in the returned array are not sorted and are not in any particular order.
        final Field[] fields = clazz.getDeclaredFields();
        Arrays.sort(fields, Comparator.comparing(Field::getName));
        try {
            // first, check that we can delve into the fields.  With JDK17+, we cannot do this by default on
            // various JDK classes
            AccessibleObject.setAccessible(fields, true);
        } catch (InaccessibleObjectException ioEx) {
            // JDK 17 - prevents access to fields.  We'll ignore this, and assume these have a decent toString() and not reflect into them
            this.appendToString(Objects.toString(obj));
            return;
        }
        for (final Field field : fields) {
            final String fieldName = field.getName();
            if (this.accept(field)) {
                try {
                    // Warning: Field.get(Object) creates wrappers objects
                    // for primitive types.
                    final Object fieldValue = this.getValue(field);
                    if (!isExcludeNullValues() || fieldValue != null) {
                        this.append(fieldName, fieldValue, !field.isAnnotationPresent(ToStringSummary.class));
                    }
                } catch (final IllegalAccessException ex) {
                    //this can't happen. Would get a Security exception
                    // instead
                    //throw a runtime exception in case the impossible
                    // happens.
                    throw new InternalError("Unexpected IllegalAccessException: " + ex.getMessage());
                }
            }
        }
    }
};