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“Based on Irkwz's answer” and similarly pointless. You are not checking the values of the fields but only if the array of Field instances returned by getDeclaredFields() contains null, which is always false. You’d have to actually get() the field’s value before checking. And when accessing private fields, you should use SomeClass.class instead of getClass(), because getClass() may return a subclass.
– Holger
Commented Feb 9, 2023 at 8:11

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