# All Classes and Interfaces

Class
Description
JacksonAnnotation
Meta-annotation (annotations used on other annotations) used for marking all annotations that are part of Jackson package.
JacksonAnnotationsInside
Meta-annotation (annotations used on other annotations) used for indicating that instead of using target annotation (annotation annotated with this annotation), Jackson should use meta-annotations it has.
JacksonAnnotationValue<A>
Marker interface used by value classes like `JsonFormat.Value` that are used to contain information from one of Jackson annotations, and can be directly instantiated from those annotations, as well as programmatically constructed and possibly merged.
JacksonInject
Jackson-specific annotation used for indicating that value of annotated property will be "injected", i.e.
JacksonInject.Value
Helper class used to contain information from a single `JacksonInject` annotation, as well as to provide possible overrides from non-annotation sources.
JsonAlias
Annotation that can be used to define one or more alternative names for a property, accepted during deserialization as alternative to the official name.
JsonAnyGetter
Marker annotation that can be used to define a non-static, no-argument method to be an "any getter"; accessor for getting a set of key/value pairs, to be serialized as part of containing POJO (similar to unwrapping) along with regular property values it has.
JsonAnySetter
Marker annotation that can be used to define a logical "any setter" mutator -- either using non-static two-argument method (first argument name of property, second value to set) or a field (of type `Map` or POJO) - to be used as a "fallback" handler for all otherwise unrecognized properties found from JSON content.
JsonAutoDetect
Class annotation that can be used to define which kinds of Methods are to be detected by auto-detection, and with what minimum access level.
JsonAutoDetect.Value
Helper class used to contain information from a single `JsonIgnoreProperties` annotation, as well as to provide possible overrides from non-annotation sources.
JsonAutoDetect.Visibility
Enumeration for possible visibility thresholds (minimum visibility) that can be used to limit which methods (and fields) are auto-detected.
JsonBackReference
Annotation used to indicate that associated property is part of two-way linkage between fields; and that its role is "child" (or "back") link.
JsonClassDescription
Annotation used to define a human-readable description for annotated type (class).
JsonCreator
Marker annotation that can be used to define constructors and factory methods as one to use for instantiating new instances of the associated class.
JsonCreator.Mode
JsonEnumDefaultValue
Marker annotation that can be used to define a default value used when trying to deserialize unknown Enum values.
JsonFilter
Annotation used to indicate which logical filter is to be used for filtering out properties of type (class) annotated; association made by this annotation declaring ids of filters, and `com.fasterxml.jackson.databind.ObjectMapper` (or objects it delegates to) providing matching filters by id.
JsonFormat
General-purpose annotation used for configuring details of how values of properties are to be serialized.
JsonFormat.Feature
Set of features that can be enabled/disabled for property annotated.
JsonFormat.Features
Helper class that encapsulates information equivalent to `Boolean` valued `EnumMap`.
JsonFormat.Shape
Value enumeration used for indicating preferred Shape; translates loosely to JSON types, with some extra values to indicate less precise choices (i.e.
JsonFormat.Value
Helper class used to contain information from a single `JsonFormat` annotation.
JsonGetter
Marker annotation that can be used to define a non-static, no-argument value-returning (non-void) method to be used as a "getter" for a logical property.
JsonIdentityInfo
Annotation used for indicating that values of annotated type or property should be serializing so that instances either contain additional object identifier (in addition actual object properties), or as a reference that consists of an object id that refers to a full serialization.
JsonIdentityReference
Optional annotation that can be used for customizing details of a reference to Objects for which "Object Identity" is enabled (see `JsonIdentityInfo`).
JsonIgnore
Marker annotation that indicates that the logical property that the accessor (field, getter/setter method or Creator parameter [of `JsonCreator`-annotated constructor or factory method]) is to be ignored by introspection-based serialization and deserialization functionality.
JsonIgnoreProperties
Annotation that can be used to either suppress serialization of properties (during serialization), or ignore processing of JSON properties read (during deserialization).
JsonIgnoreProperties.Value
Helper class used to contain information from a single `JsonIgnoreProperties` annotation, as well as to provide possible overrides from non-annotation sources.
JsonIgnoreType
Marker annotation that indicates that all properties that have type annotated with this annotation are to be ignored during serialization and deserialization.
JsonInclude
Annotation used to indicate when value of the annotated property (when used for a field, method or constructor parameter), or all properties of the annotated class, is to be serialized.
JsonInclude.Include
Enumeration used with `JsonInclude` to define which properties of Java Beans are to be included in serialization.
JsonInclude.Value
Helper class used to contain information from a single `JsonInclude` annotation.
JsonIncludeProperties
Annotation that can be used to either only include serialization of properties (during serialization), or only include processing of JSON properties read (during deserialization).
JsonIncludeProperties.Value
Helper class used to contain information from a single `JsonIncludeProperties` annotation, as well as to provide possible overrides from non-annotation sources.
JsonKey
Marker annotation that indicates that the value of annotated accessor (either field or "getter" method [a method with non-void return type, no args]) is to be used as the single value to serialize for the instance.
JsonManagedReference
Annotation used to indicate that annotated property is part of two-way linkage between fields; and that its role is "parent" (or "forward") link.
JsonMerge
Annotation to specify whether annotated property value should use "merging" approach: merging meaning that the current value is first accessed (with a getter or field) and then modified with incoming data.
JsonProperty
Marker annotation that can be used to define a non-static method as a "setter" or "getter" for a logical property (depending on its signature), or non-static object field to be used (serialized, deserialized) as a logical property.
JsonProperty.Access
Various options for `JsonProperty.access()` property, specifying how property may be accessed during serialization ("read") and deserialization ("write") (note that the direction of read and write is from perspective of the property, not from external data format: this may be confusing in some contexts).
JsonPropertyDescription
Annotation used to define a human-readable description for a logical property.
JsonPropertyOrder
Annotation that can be used to define ordering (possibly partial) to use when serializing object properties.
JsonRawValue
Marker annotation that indicates that the annotated method or field should be serialized by including literal String value of the property as is, without quoting of characters.
JsonRootName
Annotation similar to `javax.xml.bind.annotation.XmlRootElement`, used to indicate name to use for root-level wrapping, if wrapping is enabled.
JsonSetter
Annotation that can be used to define a non-static, single-argument method to be used as a "setter" for a logical property as an alternative to recommended `JsonProperty` annotation; or (as of 2.9 and later), specify additional aspects of the assigning property a value during serialization.
JsonSetter.Value
Helper class used to contain information from a single `JsonSetter` annotation, as well as to provide possible overrides from non-annotation sources.
JsonSubTypes
Annotation used with `JsonTypeInfo` to indicate subtypes of serializable polymorphic types, and to associate logical names used within JSON content (which is more portable than using physical Java class names).
JsonSubTypes.Type
Definition of a subtype, along with optional name(s).
JsonTypeId
Marker annotation that can be used on a property accessor (field, getter or setter, constructor parameter) to indicate that the property is to contain type id to use when including polymorphic type information.
JsonTypeInfo
Annotation used for configuring details of if and how type information is used with JSON serialization and deserialization, to preserve information about actual class of Object instances.
JsonTypeInfo.As
Definition of standard type inclusion mechanisms for type metadata.
JsonTypeInfo.Id
Definition of different type identifiers that can be included in JSON during serialization, and used for deserialization.
JsonTypeInfo.None
Deprecated.
Since 2.5, use any Annotation type (such as `JsonTypeInfo`), if such behavior is needed; this is rarely necessary.
JsonTypeName
Annotation used for binding logical name that the annotated class has.
JsonUnwrapped
Annotation used to indicate that a POJO-valued property should be serialized "unwrapped" -- that is, if it would be serialized as Object value, its properties are instead included as properties of its containing Object -- and deserialized reproducing "missing" structure.
JsonValue
Marker annotation that indicates that the value of annotated accessor (either field or "getter" method [a method with non-void return type, no args]) is to be used as the single value to serialize for the instance, instead of the usual method of collecting properties of value.
JsonView
Annotation used for indicating view(s) that the property that is defined by method or field annotated is part of.
Nulls
Enumeration used with `JsonSetter` (for properties `nulls` and `contentNulls`) to define how explicit `null` values from input (if input format has the concept; JSON, for example does) are handled.
ObjectIdGenerator<T>
Definition of API used for constructing Object Identifiers (as annotated using `JsonIdentityInfo`).
ObjectIdGenerator.IdKey
Simple key class that can be used as a key for ObjectId-to-POJO mappings, when multiple ObjectId types and scopes are used.
ObjectIdGenerators
Container class for standard `ObjectIdGenerator` implementations: `ObjectIdGenerators.IntSequenceGenerator` `ObjectIdGenerators.PropertyGenerator` `ObjectIdGenerators.StringIdGenerator` (since 2.7) `ObjectIdGenerators.UUIDGenerator`
ObjectIdGenerators.IntSequenceGenerator
Simple sequence-number based generator, which uses basic Java `int`s (starting with value 1) as Object Identifiers.
ObjectIdGenerators.None
Abstract marker class used to allow explicitly specifying that no generator is used; which also implies that no Object Id is to be included or used.
ObjectIdGenerators.PropertyGenerator
Abstract place-holder class which is used to denote case where Object Identifier to use comes from a POJO property (getter method or field).
ObjectIdGenerators.StringIdGenerator
Implementation that will accept arbitrary (but unique) String Ids on deserialization, and (by default) use random UUID generation similar to `ObjectIdGenerators.UUIDGenerator` for generation ids.
ObjectIdGenerators.UUIDGenerator
Implementation that just uses `UUID`s as reliably unique identifiers: downside is that resulting String is 36 characters long.
ObjectIdResolver
Definition of API used for resolving actual Java object from Object Identifiers (as annotated using `JsonIdentityInfo`).
OptBoolean
Optional Boolean value ("nullean").
PropertyAccessor
Enumeration used to define kinds of elements (called "property accessors") that annotations like `JsonAutoDetect` apply to.
SimpleObjectIdResolver
Simple implementation of `ObjectIdResolver`