Interface JsonNull

All Superinterfaces:

JsonValue

public non-sealed interface JsonNull
extends JsonValue

The interface that represents JSON null.

A JsonNull can be created by parsing JSON text using either Json.parse(String) or Json.parse(char[]).

Alternatively, of() can be used to obtain a JsonNull.

Since:

28

Method Summary

Static Methods

Modifier and Type	Method	Description
static JsonNull	of()	Returns a JsonNull.

Methods declared in interface JsonValue

asBoolean, asDouble, asInt, asList, asLong, asMap, asString, get, get, toString, tryGet, tryValue

Modifier and Type	Method	Description
default boolean	asBoolean()	Returns the boolean value represented by this JsonValue if it is an instance of JsonBoolean; otherwise, throws a JsonValueException.
default double	asDouble()	Returns a double if this JsonValue is an instance of JsonNumber that can be converted, as if by Double.parseDouble, to a finite double value; otherwise, throws a JsonValueException.
default int	asInt()	Returns an int if this JsonValue is an instance of JsonNumber that can be converted exactly; otherwise, throws a JsonValueException.
default List<JsonValue>	asList()	Returns an unmodifiable list of the JsonValues if this JsonValue is an instance of JsonArray; otherwise, throws a JsonValueException.
default long	asLong()	Returns a long if this JsonValue is an instance of JsonNumber that can be converted exactly; otherwise, throws a JsonValueException.
default Map<String, JsonValue>	asMap()	Returns an unmodifiable map of String to JsonValue if this JsonValue is an instance of JsonObject; otherwise, throws a JsonValueException.
default String	asString()	Returns the String value represented by this JsonValue if it is an instance of JsonString; otherwise, throws a JsonValueException.
default JsonValue	get(int index)	Returns the JsonValue associated with the given index if this JsonValue is an instance of JsonArray; otherwise, throws a JsonValueException.
default JsonValue	get(String name)	Returns the JsonValue associated with the given member name if this JsonValue is an instance of JsonObject; otherwise, throws a JsonValueException.
String	toString()	Returns a String representation of this JsonValue that conforms to JSON syntax.
default Optional<JsonValue>	tryGet(String name)	Returns an Optional containing the value of a given member of this JsonObject, or an empty Optional if the member is absent; throws JsonValueException if this JsonValue is not a JsonObject.
default Optional<JsonValue>	tryValue()	Returns an Optional containing this JsonValue if it is not an instance of JsonNull, otherwise an empty Optional.

Method Details

of

static JsonNull of()

Returns a JsonNull.

Returns:

a JsonNull