Java protected fields shows as public

Have any class such as

public class Example {
    public String pub;
    protected String prot;
}

But in class which try to get public fields I see prot field as public. code of getting field:

public static List<Field> getPublicFields(Class targetClass) {
    List<Field> result = new ArrayList<>();
    result = Arrays.asList(targetClass.getFields());
    for (int i = 0; i < result.size(); i++) {
        Field currentField = result.get(i);
        int modifiers = currentField.getModifiers();
        if (Modifier.isStatic(modifiers) ||
                currentField.isSynthetic() ||
                !Modifier.isPublic(modifiers)) {
            result.remove(i);
            i--;
            continue;
        }
    }
    return result;
}

What am I write incorrect?