javax.json

Interface JsonArray

All Superinterfaces:

Collection<JsonValue>, Iterable<JsonValue>, JsonStructure, JsonValue, List<JsonValue>

public interface JsonArray
extends JsonStructure, List<JsonValue>

A JsonArray e.g.

 [1,5,8]
 

or

  [
   {"name":"karl", "age": 38},
   {"name":"sue", "age": 42},
  ]
 

Nested Class Summary

Nested classes/interfaces inherited from interface javax.json.JsonValue

JsonValue.ValueType

Field Summary

Fields inherited from interface javax.json.JsonValue

EMPTY_JSON_ARRAY, EMPTY_JSON_OBJECT, FALSE, NULL, TRUE

Method Summary

Modifier and Type	Method and Description
boolean	getBoolean(int index)
boolean	getBoolean(int index, boolean defaultValue)
int	getInt(int index)
int	getInt(int index, int defaultValue)
JsonArray	getJsonArray(int index)
JsonNumber	getJsonNumber(int index)
JsonObject	getJsonObject(int index)
JsonString	getJsonString(int index)
String	getString(int index)
String	getString(int index, String defaultValue)
<T extends JsonValue> List<T>	getValuesAs(Class<T> clazz)
default <T,K extends JsonValue> List<T>	getValuesAs(Function<K,T> func) Returns a list for the array.
boolean	isNull(int index)

Methods inherited from interface javax.json.JsonStructure

getValue

Methods inherited from interface javax.json.JsonValue

asJsonArray, asJsonObject, getValueType, toString

Methods inherited from interface java.util.List

add, add, addAll, addAll, clear, contains, containsAll, equals, get, hashCode, indexOf, isEmpty, iterator, lastIndexOf, listIterator, listIterator, remove, remove, removeAll, replaceAll, retainAll, set, size, sort, spliterator, subList, toArray, toArray

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream

Methods inherited from interface java.lang.Iterable

forEach

Method Detail

getJsonObject

JsonObject getJsonObject(int index)

Returns:

the JsonObject at the given position

Throws:

IndexOutOfBoundsException - if the index is out of range

ClassCastException - if the value at the specified position is not assignable to the JsonObject

getJsonArray

JsonArray getJsonArray(int index)

Returns:

the JsonArray at the given position

Throws:

IndexOutOfBoundsException - if the index is out of range

ClassCastException - if the value at the specified position is not assignable to the JsonArray

getJsonNumber

JsonNumber getJsonNumber(int index)

Returns:

the JsonNumber at the given position

Throws:

IndexOutOfBoundsException - if the index is out of range

ClassCastException - if the value at the specified position is not assignable to the JsonNumber

getJsonString

JsonString getJsonString(int index)

Returns:

the JsonString at the given position

Throws:

IndexOutOfBoundsException - if the index is out of range

ClassCastException - if the value at the specified position is not assignable to the JsonString

getValuesAs

<T extends JsonValue> List<T> getValuesAs(Class<T> clazz)

Returns:

the respective JsonValue at the given position

Throws:

IndexOutOfBoundsException - if the index is out of range

ClassCastException - if the value at the specified position is not assignable to the given slazz

getValuesAs

default <T,K extends JsonValue> List<T> getValuesAs(Function<K,T> func)

Returns a list for the array. The value and the type of the elements in the list is specified by the func argument.

This method can be used to obtain a list of the unwrapped types, such as

     List<String> strings = ary1.getValuesAs(JsonString::getString);
     List<Integer> ints = ary2.getValuesAs(JsonNumber::intValue);
  

It can also be used to obtain a list of simple projections, such as

 
     Lsit<Integer> stringsizes = arr.getValueAs((JsonString v) -> v.getString().length();
  

Type Parameters:

K - The element type (must be a subtype of JsonValue) of this JsonArray.

T - The element type of the returned List

Parameters:

func - The function that maps the elements of this JsonArray to the target elements.

Returns:

A List of the specified values and type.

Throws:

ClassCastException - if the JsonArray contains a value of wrong type

getString

String getString(int index)

Returns:

the native String at the given position

Throws:

IndexOutOfBoundsException - if the index is out of range

ClassCastException - if the value at the specified position is not assignable to a String

getString

String getString(int index,
                 String defaultValue)

Returns:

the native String at the given position or the defaultValue if null

Throws:

IndexOutOfBoundsException - if the index is out of range

ClassCastException - if the value at the specified position is not assignable to a String

getInt

int getInt(int index)

Returns:

the native int value at the given position

Throws:

IndexOutOfBoundsException - if the index is out of range

ClassCastException - if the value at the specified position is not assignable to an int

NullPointerException - if an object with the given name doesn't exist

getInt

int getInt(int index,
           int defaultValue)

Returns:

the native int value at the given position or the defaultValue if null

Throws:

IndexOutOfBoundsException - if the index is out of range

ClassCastException - if the value at the specified position is not assignable to an int

getBoolean

boolean getBoolean(int index)

Returns:

the native boolean value at the given position

Throws:

IndexOutOfBoundsException - if the index is out of range

ClassCastException - if the value at the specified position is not assignable to a boolean

NullPointerException - if an object with the given name doesn't exist

getBoolean

boolean getBoolean(int index,
                   boolean defaultValue)

Returns:

the native boolean value at the given position or the defaultValue if null

Throws:

IndexOutOfBoundsException - if the index is out of range

ClassCastException - if the value at the specified position is not assignable to a boolean

isNull

boolean isNull(int index)

Returns:

whether the value at the given position is JsonValue.NULL.

Throws:

IndexOutOfBoundsException - if the index is out of range