[#BloombergLP-bdljsn-Json-2constructor-0b0]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdljsn.adoc[bdljsn]::xref:BloombergLP/bdljsn/Json.adoc[Json]::Json
:relfileprefix: ../../../
:mrdocs:

Create a `Json` object having the type `JsonNull` and the same value as the specified `null`. Optionally specify the `basicAllocator` used to supply memory. If `basicAllocator` is not specified, the currently installed default allocator is used to supply memory.

== Synopsis

Declared in `<bdljsn_json.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
explicit
Json(
    xref:BloombergLP/bdljsn/JsonNull-0b.adoc[JsonNull] const& null,
    xref:BloombergLP/bslma/Allocator.adoc[bslma::Allocator]* basicAllocator = 0);
----


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