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Jackson - property missing on deserialization

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What happens if I annotate a constructor parameter using @JsonProperty but the Json doesn't specify that property. What value does the constructor get?

How do I differentiate between a property having a null value versus a property that is not present in the JSON?
https://snipt.net/embed/0f216c5a41202aba5c3d114d750026e4/
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0f216c5a41202aba5c3d114d750026e4
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2019-06-23T18:36:03
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Oct 28, 2015 at 03:07 PM
/api/public/snipt/141994/
jackson-propery-missing-on-deserialization
<table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><a href="#L-1">1</a> <a href="#L-2">2</a> <a href="#L-3">3</a></pre></div></td><td class="code"><div class="highlight"><pre><span></span><span id="L-1"><a name="L-1"></a>What happens if I annotate a constructor parameter using @JsonProperty but the Json doesn&#39;t specify that property. What value does the constructor get? </span><span id="L-2"><a name="L-2"></a> </span><span id="L-3"><a name="L-3"></a>How do I differentiate between a property having a null value versus a property that is not present in the JSON? </span></pre></div> </td></tr></table>
jackson, java