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<h1 title="Package" class="title">Package&nbsp;com.fasterxml.jackson.databind</h1>
<div class="docSummary">
<div class="block">Basic data binding (mapping) functionality that
allows for reading JSON content into Java Objects (POJOs)
and JSON Trees (<a href="../../../../com/fasterxml/jackson/databind/JsonNode.html" title="class in com.fasterxml.jackson.databind"><code>JsonNode</code></a>), as well as
writing Java Objects and trees as JSON.</div>
</div>
<p>See:&nbsp;<a href="#package.description">Description</a></p>
</div>
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<table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="Interface Summary table, listing interfaces, and an explanation">
<caption><span>Interface Summary</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Interface</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/BeanProperty.html" title="interface in com.fasterxml.jackson.databind">BeanProperty</a></td>
<td class="colLast">
<div class="block">Bean properties are logical entities that represent data
 that Java objects (POJOs (Plain Old Java Objects), sometimes also called "beans")
 contain; and that are accessed using accessors (methods like getters
 and setters, fields, constructor parameters).</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/JsonSerializable.html" title="interface in com.fasterxml.jackson.databind">JsonSerializable</a></td>
<td class="colLast">
<div class="block">Interface that can be implemented by objects that know how to
 serialize themselves to JSON, using <a href="http://fasterxml.github.io/jackson-core/javadoc/2.10/com/fasterxml/jackson/core/JsonGenerator.html?is-external=true" title="class or interface in com.fasterxml.jackson.core"><code>JsonGenerator</code></a>
 (and <a href="../../../../com/fasterxml/jackson/databind/SerializerProvider.html" title="class in com.fasterxml.jackson.databind"><code>SerializerProvider</code></a> if necessary).</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/Module.SetupContext.html" title="interface in com.fasterxml.jackson.databind">Module.SetupContext</a></td>
<td class="colLast">
<div class="block">Interface Jackson exposes to modules for purpose of registering
 extended functionality.</div>
</td>
</tr>
</tbody>
</table>
</li>
<li class="blockList">
<table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="Class Summary table, listing classes, and an explanation">
<caption><span>Class Summary</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Class</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/AbstractTypeResolver.html" title="class in com.fasterxml.jackson.databind">AbstractTypeResolver</a></td>
<td class="colLast">
<div class="block">Defines interface for resolvers that can resolve abstract types into concrete
 ones; either by using static mappings, or possibly by materializing
 implementations dynamically.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/AnnotationIntrospector.html" title="class in com.fasterxml.jackson.databind">AnnotationIntrospector</a></td>
<td class="colLast">
<div class="block">Abstract class that defines API used for introspecting annotation-based
 configuration for serialization and deserialization.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/AnnotationIntrospector.ReferenceProperty.html" title="class in com.fasterxml.jackson.databind">AnnotationIntrospector.ReferenceProperty</a></td>
<td class="colLast">
<div class="block">Value type used with managed and back references; contains type and
 logic name, used to link related references</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/BeanDescription.html" title="class in com.fasterxml.jackson.databind">BeanDescription</a></td>
<td class="colLast">
<div class="block">Basic container for information gathered by <a href="../../../../com/fasterxml/jackson/databind/introspect/ClassIntrospector.html" title="class in com.fasterxml.jackson.databind.introspect"><code>ClassIntrospector</code></a> to
 help in constructing serializers and deserializers.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/BeanProperty.Bogus.html" title="class in com.fasterxml.jackson.databind">BeanProperty.Bogus</a></td>
<td class="colLast">
<div class="block">Alternative "Null" implementation that can be used in cases where a non-null
 <a href="../../../../com/fasterxml/jackson/databind/BeanProperty.html" title="interface in com.fasterxml.jackson.databind"><code>BeanProperty</code></a> is needed</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/BeanProperty.Std.html" title="class in com.fasterxml.jackson.databind">BeanProperty.Std</a></td>
<td class="colLast">
<div class="block">Simple stand-alone implementation, useful as a placeholder
 or base class for more complex implementations.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/DatabindContext.html" title="class in com.fasterxml.jackson.databind">DatabindContext</a></td>
<td class="colLast">
<div class="block">Shared base class for <a href="../../../../com/fasterxml/jackson/databind/DeserializationContext.html" title="class in com.fasterxml.jackson.databind"><code>DeserializationContext</code></a> and
 <a href="../../../../com/fasterxml/jackson/databind/SerializerProvider.html" title="class in com.fasterxml.jackson.databind"><code>SerializerProvider</code></a>, context objects passed through data-binding
 process.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/DeserializationConfig.html" title="class in com.fasterxml.jackson.databind">DeserializationConfig</a></td>
<td class="colLast">
<div class="block">Object that contains baseline configuration for deserialization
 process.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/DeserializationContext.html" title="class in com.fasterxml.jackson.databind">DeserializationContext</a></td>
<td class="colLast">
<div class="block">Context for the process of deserialization a single root-level value.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/InjectableValues.html" title="class in com.fasterxml.jackson.databind">InjectableValues</a></td>
<td class="colLast">
<div class="block">Abstract class that defines API for objects that provide value to
 "inject" during deserialization.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/InjectableValues.Std.html" title="class in com.fasterxml.jackson.databind">InjectableValues.Std</a></td>
<td class="colLast">
<div class="block">Simple standard implementation which uses a simple Map to
 store values to inject, identified by simple String keys.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/JavaType.html" title="class in com.fasterxml.jackson.databind">JavaType</a></td>
<td class="colLast">
<div class="block">Base class for type token classes used both to contain information
 and as keys for deserializers.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/JsonDeserializer.html" title="class in com.fasterxml.jackson.databind">JsonDeserializer</a>&lt;T&gt;</td>
<td class="colLast">
<div class="block">Abstract class that defines API used by <a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html" title="class in com.fasterxml.jackson.databind"><code>ObjectMapper</code></a> (and
 other chained <a href="../../../../com/fasterxml/jackson/databind/JsonDeserializer.html" title="class in com.fasterxml.jackson.databind"><code>JsonDeserializer</code></a>s too) to deserialize Objects of
 arbitrary types from JSON, using provided <a href="http://fasterxml.github.io/jackson-core/javadoc/2.10/com/fasterxml/jackson/core/JsonParser.html?is-external=true" title="class or interface in com.fasterxml.jackson.core"><code>JsonParser</code></a>.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/JsonDeserializer.None.html" title="class in com.fasterxml.jackson.databind">JsonDeserializer.None</a></td>
<td class="colLast">
<div class="block">This marker class is only to be used with annotations, to
 indicate that <b>no deserializer is configured</b>.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/JsonMappingException.Reference.html" title="class in com.fasterxml.jackson.databind">JsonMappingException.Reference</a></td>
<td class="colLast">
<div class="block">Simple bean class used to contain references.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/JsonNode.html" title="class in com.fasterxml.jackson.databind">JsonNode</a></td>
<td class="colLast">
<div class="block">Base class for all JSON nodes, which form the basis of JSON
 Tree Model that Jackson implements.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/JsonSerializable.Base.html" title="class in com.fasterxml.jackson.databind">JsonSerializable.Base</a></td>
<td class="colLast">
<div class="block">Base class with minimal implementation, as well as couple of extension methods
 that core Jackson databinding makes use of.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/JsonSerializer.html" title="class in com.fasterxml.jackson.databind">JsonSerializer</a>&lt;T&gt;</td>
<td class="colLast">
<div class="block">Abstract class that defines API used by <a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html" title="class in com.fasterxml.jackson.databind"><code>ObjectMapper</code></a> (and
 other chained <a href="../../../../com/fasterxml/jackson/databind/JsonSerializer.html" title="class in com.fasterxml.jackson.databind"><code>JsonSerializer</code></a>s too) to serialize Objects of
 arbitrary types into JSON, using provided <a href="http://fasterxml.github.io/jackson-core/javadoc/2.10/com/fasterxml/jackson/core/JsonGenerator.html?is-external=true" title="class or interface in com.fasterxml.jackson.core"><code>JsonGenerator</code></a>.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/JsonSerializer.None.html" title="class in com.fasterxml.jackson.databind">JsonSerializer.None</a></td>
<td class="colLast">
<div class="block">This marker class is only to be used with annotations, to
 indicate that <b>no serializer is configured</b>.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/KeyDeserializer.html" title="class in com.fasterxml.jackson.databind">KeyDeserializer</a></td>
<td class="colLast">
<div class="block">Abstract class that defines API used for deserializing JSON content
 field names into Java Map keys.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/KeyDeserializer.None.html" title="class in com.fasterxml.jackson.databind">KeyDeserializer.None</a></td>
<td class="colLast">
<div class="block">This marker class is only to be used with annotations, to
 indicate that <b>no deserializer is configured</b>.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/MappingIterator.html" title="class in com.fasterxml.jackson.databind">MappingIterator</a>&lt;T&gt;</td>
<td class="colLast">
<div class="block">Iterator exposed by <a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html" title="class in com.fasterxml.jackson.databind"><code>ObjectMapper</code></a> when binding sequence of
 objects.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/MappingJsonFactory.html" title="class in com.fasterxml.jackson.databind">MappingJsonFactory</a></td>
<td class="colLast">
<div class="block">Sub-class of <a href="http://fasterxml.github.io/jackson-core/javadoc/2.10/com/fasterxml/jackson/core/JsonFactory.html?is-external=true" title="class or interface in com.fasterxml.jackson.core"><code>JsonFactory</code></a> that will create a proper
 <a href="http://fasterxml.github.io/jackson-core/javadoc/2.10/com/fasterxml/jackson/core/ObjectCodec.html?is-external=true" title="class or interface in com.fasterxml.jackson.core"><code>ObjectCodec</code></a> to allow seam-less conversions between
 JSON content and Java objects (POJOs).</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/Module.html" title="class in com.fasterxml.jackson.databind">Module</a></td>
<td class="colLast">
<div class="block">Simple interface for extensions that can be registered with <a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html" title="class in com.fasterxml.jackson.databind"><code>ObjectMapper</code></a>
 to provide a well-defined set of extensions to default functionality; such as
 support for new data types.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html" title="class in com.fasterxml.jackson.databind">ObjectMapper</a></td>
<td class="colLast">
<div class="block">ObjectMapper provides functionality for reading and writing JSON,
 either to and from basic POJOs (Plain Old Java Objects), or to and from
 a general-purpose JSON Tree Model (<a href="../../../../com/fasterxml/jackson/databind/JsonNode.html" title="class in com.fasterxml.jackson.databind"><code>JsonNode</code></a>), as well as
 related functionality for performing conversions.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.DefaultTypeResolverBuilder.html" title="class in com.fasterxml.jackson.databind">ObjectMapper.DefaultTypeResolverBuilder</a></td>
<td class="colLast">
<div class="block">Customized <a href="../../../../com/fasterxml/jackson/databind/jsontype/TypeResolverBuilder.html" title="interface in com.fasterxml.jackson.databind.jsontype"><code>TypeResolverBuilder</code></a> that provides type resolver builders
 used with so-called "default typing"
 (see <a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html#activateDefaultTyping-com.fasterxml.jackson.databind.jsontype.PolymorphicTypeValidator-"><code>ObjectMapper.activateDefaultTyping(PolymorphicTypeValidator)</code></a> for details).</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/ObjectReader.html" title="class in com.fasterxml.jackson.databind">ObjectReader</a></td>
<td class="colLast">
<div class="block">Builder object that can be used for per-serialization configuration of
 deserialization parameters, such as root type to use or object
 to update (instead of constructing new instance).</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.html" title="class in com.fasterxml.jackson.databind">ObjectWriter</a></td>
<td class="colLast">
<div class="block">Builder object that can be used for per-serialization configuration of
 serialization parameters, such as JSON View and root type to use.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.GeneratorSettings.html" title="class in com.fasterxml.jackson.databind">ObjectWriter.GeneratorSettings</a></td>
<td class="colLast">
<div class="block">Helper class used for containing settings specifically related
 to (re)configuring <a href="http://fasterxml.github.io/jackson-core/javadoc/2.10/com/fasterxml/jackson/core/JsonGenerator.html?is-external=true" title="class or interface in com.fasterxml.jackson.core"><code>JsonGenerator</code></a> constructed for
 writing output.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.Prefetch.html" title="class in com.fasterxml.jackson.databind">ObjectWriter.Prefetch</a></td>
<td class="colLast">
<div class="block">As a minor optimization, we will make an effort to pre-fetch a serializer,
 or at least relevant <code>TypeSerializer</code>, if given enough
 information.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/PropertyMetadata.html" title="class in com.fasterxml.jackson.databind">PropertyMetadata</a></td>
<td class="colLast">
<div class="block">Simple container class used for storing "additional" metadata about
 properties.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/PropertyMetadata.MergeInfo.html" title="class in com.fasterxml.jackson.databind">PropertyMetadata.MergeInfo</a></td>
<td class="colLast">
<div class="block">Helper class used for containing information about expected merge
 information for this property, if merging is expected.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/PropertyName.html" title="class in com.fasterxml.jackson.databind">PropertyName</a></td>
<td class="colLast">
<div class="block">Simple value class used for containing names of properties as defined
 by annotations (and possibly other configuration sources).</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/PropertyNamingStrategy.html" title="class in com.fasterxml.jackson.databind">PropertyNamingStrategy</a></td>
<td class="colLast">
<div class="block">Class that defines how names of JSON properties ("external names")
 are derived from names of POJO methods and fields ("internal names"),
 in cases where they are not
 auto-detected and no explicit annotations exist for naming.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/PropertyNamingStrategy.KebabCaseStrategy.html" title="class in com.fasterxml.jackson.databind">PropertyNamingStrategy.KebabCaseStrategy</a></td>
<td class="colLast">
<div class="block">Naming strategy similar to <a href="../../../../com/fasterxml/jackson/databind/PropertyNamingStrategy.SnakeCaseStrategy.html" title="class in com.fasterxml.jackson.databind"><code>PropertyNamingStrategy.SnakeCaseStrategy</code></a>, but instead of underscores
 as separators, uses hyphens.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/PropertyNamingStrategy.LowerCaseStrategy.html" title="class in com.fasterxml.jackson.databind">PropertyNamingStrategy.LowerCaseStrategy</a></td>
<td class="colLast">
<div class="block">Simple strategy where external name simply only uses lower-case characters,
 and no separators.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/PropertyNamingStrategy.LowerCaseWithUnderscoresStrategy.html" title="class in com.fasterxml.jackson.databind">PropertyNamingStrategy.LowerCaseWithUnderscoresStrategy</a></td>
<td class="colLast">Deprecated
<div class="block"><span class="deprecationComment">In 2.7 use <a href="../../../../com/fasterxml/jackson/databind/PropertyNamingStrategy.SnakeCaseStrategy.html" title="class in com.fasterxml.jackson.databind"><code>PropertyNamingStrategy.SnakeCaseStrategy</code></a> instead</span></div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/PropertyNamingStrategy.LowerDotCaseStrategy.html" title="class in com.fasterxml.jackson.databind">PropertyNamingStrategy.LowerDotCaseStrategy</a></td>
<td class="colLast">
<div class="block">Naming strategy similar to <a href="../../../../com/fasterxml/jackson/databind/PropertyNamingStrategy.KebabCaseStrategy.html" title="class in com.fasterxml.jackson.databind"><code>PropertyNamingStrategy.KebabCaseStrategy</code></a>, but instead of hyphens
 as separators, uses dots.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/PropertyNamingStrategy.PascalCaseStrategy.html" title="class in com.fasterxml.jackson.databind">PropertyNamingStrategy.PascalCaseStrategy</a></td>
<td class="colLast">Deprecated
<div class="block"><span class="deprecationComment">In 2.7 use <a href="../../../../com/fasterxml/jackson/databind/PropertyNamingStrategy.UpperCamelCaseStrategy.html" title="class in com.fasterxml.jackson.databind"><code>PropertyNamingStrategy.UpperCamelCaseStrategy</code></a> instead</span></div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/PropertyNamingStrategy.PropertyNamingStrategyBase.html" title="class in com.fasterxml.jackson.databind">PropertyNamingStrategy.PropertyNamingStrategyBase</a></td>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/PropertyNamingStrategy.SnakeCaseStrategy.html" title="class in com.fasterxml.jackson.databind">PropertyNamingStrategy.SnakeCaseStrategy</a></td>
<td class="colLast">
<div class="block">A <a href="../../../../com/fasterxml/jackson/databind/PropertyNamingStrategy.html" title="class in com.fasterxml.jackson.databind"><code>PropertyNamingStrategy</code></a> that translates typical camel case Java
 property names to lower case JSON element names, separated by
 underscores.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/PropertyNamingStrategy.UpperCamelCaseStrategy.html" title="class in com.fasterxml.jackson.databind">PropertyNamingStrategy.UpperCamelCaseStrategy</a></td>
<td class="colLast">
<div class="block">A <a href="../../../../com/fasterxml/jackson/databind/PropertyNamingStrategy.html" title="class in com.fasterxml.jackson.databind"><code>PropertyNamingStrategy</code></a> that translates typical camelCase Java
 property names to PascalCase JSON element names (i.e., with a capital
 first letter).</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/SequenceWriter.html" title="class in com.fasterxml.jackson.databind">SequenceWriter</a></td>
<td class="colLast">
<div class="block">Writer class similar to <a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.html" title="class in com.fasterxml.jackson.databind"><code>ObjectWriter</code></a>, except that it can be used
 for writing sequences of values, not just a single value.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/SerializationConfig.html" title="class in com.fasterxml.jackson.databind">SerializationConfig</a></td>
<td class="colLast">
<div class="block">Object that contains baseline configuration for serialization
 process.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/SerializerProvider.html" title="class in com.fasterxml.jackson.databind">SerializerProvider</a></td>
<td class="colLast">
<div class="block">Class that defines API used by <a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html" title="class in com.fasterxml.jackson.databind"><code>ObjectMapper</code></a> and
 <a href="../../../../com/fasterxml/jackson/databind/JsonSerializer.html" title="class in com.fasterxml.jackson.databind"><code>JsonSerializer</code></a>s to obtain serializers capable of serializing
 instances of specific types; as well as the default implementation
 of the functionality.</div>
</td>
</tr>
</tbody>
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<caption><span>Enum Summary</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Enum</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/AnnotationIntrospector.ReferenceProperty.Type.html" title="enum in com.fasterxml.jackson.databind">AnnotationIntrospector.ReferenceProperty.Type</a></td>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/DeserializationFeature.html" title="enum in com.fasterxml.jackson.databind">DeserializationFeature</a></td>
<td class="colLast">
<div class="block">Enumeration that defines simple on/off features that affect
 the way Java objects are deserialized from JSON</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/MapperFeature.html" title="enum in com.fasterxml.jackson.databind">MapperFeature</a></td>
<td class="colLast">
<div class="block">Enumeration that defines simple on/off features to set
 for <a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html" title="class in com.fasterxml.jackson.databind"><code>ObjectMapper</code></a>, and accessible (but not changeable)
 via <a href="../../../../com/fasterxml/jackson/databind/ObjectReader.html" title="class in com.fasterxml.jackson.databind"><code>ObjectReader</code></a> and <a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.html" title="class in com.fasterxml.jackson.databind"><code>ObjectWriter</code></a> (as well as
 through various convenience methods through context objects).</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.DefaultTyping.html" title="enum in com.fasterxml.jackson.databind">ObjectMapper.DefaultTyping</a></td>
<td class="colLast">
<div class="block">Enumeration used with <a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html#activateDefaultTyping-com.fasterxml.jackson.databind.jsontype.PolymorphicTypeValidator-"><code>ObjectMapper.activateDefaultTyping(PolymorphicTypeValidator)</code></a>
 to specify what kind of types (classes) default typing should
 be used for.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/SerializationFeature.html" title="enum in com.fasterxml.jackson.databind">SerializationFeature</a></td>
<td class="colLast">
<div class="block">Enumeration that defines simple on/off features that affect
 the way Java objects are serialized.</div>
</td>
</tr>
</tbody>
</table>
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<caption><span>Exception Summary</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Exception</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/JsonMappingException.html" title="class in com.fasterxml.jackson.databind">JsonMappingException</a></td>
<td class="colLast">
<div class="block">Checked exception used to signal fatal problems with mapping of
 content, distinct from low-level I/O problems (signaled using
 simple <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io"><code>IOException</code></a>s) or data encoding/decoding
 problems (signaled with <a href="http://fasterxml.github.io/jackson-core/javadoc/2.10/com/fasterxml/jackson/core/JsonParseException.html?is-external=true" title="class or interface in com.fasterxml.jackson.core"><code>JsonParseException</code></a>,
 <a href="http://fasterxml.github.io/jackson-core/javadoc/2.10/com/fasterxml/jackson/core/JsonGenerationException.html?is-external=true" title="class or interface in com.fasterxml.jackson.core"><code>JsonGenerationException</code></a>).</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/RuntimeJsonMappingException.html" title="class in com.fasterxml.jackson.databind">RuntimeJsonMappingException</a></td>
<td class="colLast">
<div class="block">Wrapper used when interface does not allow throwing a checked
 <a href="../../../../com/fasterxml/jackson/databind/JsonMappingException.html" title="class in com.fasterxml.jackson.databind"><code>JsonMappingException</code></a></div>
</td>
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<h2 title="Package com.fasterxml.jackson.databind Description">Package com.fasterxml.jackson.databind Description</h2>
<div class="block">Basic data binding (mapping) functionality that
allows for reading JSON content into Java Objects (POJOs)
and JSON Trees (<a href="../../../../com/fasterxml/jackson/databind/JsonNode.html" title="class in com.fasterxml.jackson.databind"><code>JsonNode</code></a>), as well as
writing Java Objects and trees as JSON.
Reading and writing (as well as related additional functionality) is accessed through
<a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html" title="class in com.fasterxml.jackson.databind"><code>ObjectMapper</code></a>,
<a href="../../../../com/fasterxml/jackson/databind/ObjectReader.html" title="class in com.fasterxml.jackson.databind"><code>ObjectReader</code></a> and
<a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.html" title="class in com.fasterxml.jackson.databind"><code>ObjectWriter</code></a>
 classes.
 In addition to reading and writing JSON content, it is also possible to use the
 general databinding functionality for many other data formats, using
 Jackson extension modules that provide such support: if so, you typically
 simply construct an <a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html" title="class in com.fasterxml.jackson.databind"><code>ObjectMapper</code></a> with
 different underlying streaming parser, generator implementation.
<p>
The main starting point for operations is <a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html" title="class in com.fasterxml.jackson.databind"><code>ObjectMapper</code></a>,
which can be used either directly (via multiple overloaded
<code>readValue</code>,
<code>readTree</code>,
<code>writeValue</code> and
<code>writeTree</code> methods, or it can be used as a configurable factory for constructing
fully immutable, thread-safe and reusable <a href="../../../../com/fasterxml/jackson/databind/ObjectReader.html" title="class in com.fasterxml.jackson.databind"><code>ObjectReader</code></a>
and <a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.html" title="class in com.fasterxml.jackson.databind"><code>ObjectWriter</code></a> objects.
<p>
In addition to simple reading and writing of JSON as POJOs or JSON trees (represented as
<a href="../../../../com/fasterxml/jackson/databind/JsonNode.html" title="class in com.fasterxml.jackson.databind"><code>JsonNode</code></a>, and configurability needed to change aspects
of reading/writing, mapper contains additional functionality such as:
<ul>
 <li>Value conversions using <a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html#convertValue-java.lang.Object-java.lang.Class-"><code>ObjectMapper.convertValue(Object, Class)</code></a>,
  <a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html#valueToTree-java.lang.Object-"><code>ObjectMapper.valueToTree(Object)</code></a> and
  <a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html#treeToValue-com.fasterxml.jackson.core.TreeNode-java.lang.Class-"><code>ObjectMapper.treeToValue(com.fasterxml.jackson.core.TreeNode, Class)</code></a> methods.
  </li>
 <li>Type introspection needed for things like generation of Schemas (like JSON Schema, Avro Schema, or protoc
   definitions), using <a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html#acceptJsonFormatVisitor-java.lang.Class-com.fasterxml.jackson.databind.jsonFormatVisitors.JsonFormatVisitorWrapper-"><code>ObjectMapper.acceptJsonFormatVisitor(Class, com.fasterxml.jackson.databind.jsonFormatVisitors.JsonFormatVisitorWrapper)</code></a>
   (note: actual handles are usually provided by various Jackson modules: mapper simply initiates calling of
   callbacks, based on serializers registered)
  </li>
</ul>
<p>
Simplest usage is of form:
<pre>
  final ObjectMapper mapper = new ObjectMapper(); // can use static singleton, inject: just make sure to reuse!
  MyValue value = new MyValue();
  // ... and configure
  File newState = new File("my-stuff.json");
  mapper.writeValue(newState, value); // writes JSON serialization of MyValue instance
  // or, read
  MyValue older = mapper.readValue(new File("my-older-stuff.json"), MyValue.class);

  // Or if you prefer JSON Tree representation:
  JsonNode root = mapper.readTree(newState);
  // and find values by, for example, using a <a href="http://fasterxml.github.io/jackson-core/javadoc/2.10/com/fasterxml/jackson/core/JsonPointer.html?is-external=true" title="class or interface in com.fasterxml.jackson.core"><code>JsonPointer</code></a> expression:
  int age = root.at("/personal/age").getValueAsInt();
</pre>
<p>
For more usage, refer to
<a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html" title="class in com.fasterxml.jackson.databind"><code>ObjectMapper</code></a>,
<a href="../../../../com/fasterxml/jackson/databind/ObjectReader.html" title="class in com.fasterxml.jackson.databind"><code>ObjectReader</code></a> and
<a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.html" title="class in com.fasterxml.jackson.databind"><code>ObjectWriter</code></a>
Javadocs.</div>
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