com.google.gson
Class JsonArray

java.lang.Object
  com.google.gson.JsonElement
      com.google.gson.JsonArray

All Implemented Interfaces:

Iterable<JsonElement>

public final class JsonArray
extends JsonElement
implements Iterable<JsonElement>

A class representing an array type in Json. An array is a list of JsonElements each of which can be of a different type. This is an ordered list, meaning that the order in which elements are added is preserved.

Author:

Inderjeet Singh, Joel Leitch

Constructor Summary

JsonArray()
Creates an empty JsonArray.

Method Summary

void	add(JsonElement element) Adds the specified element to self.
void	addAll(JsonArray array) Adds all the elements of the specified array to self.
JsonElement	get(int i) Returns the ith element of the array.
BigDecimal	getAsBigDecimal() convenience method to get this array as a BigDecimal if it contains a single element.
BigInteger	getAsBigInteger() convenience method to get this array as a BigInteger if it contains a single element.
boolean	getAsBoolean() convenience method to get this array as a boolean if it contains a single element.
byte	getAsByte() convenience method to get this element as a primitive byte value.
char	getAsCharacter() convenience method to get this element as a primitive character value.
double	getAsDouble() convenience method to get this array as a double if it contains a single element.
float	getAsFloat() convenience method to get this array as a float if it contains a single element.
int	getAsInt() convenience method to get this array as an integer if it contains a single element.
long	getAsLong() convenience method to get this array as a long if it contains a single element.
Number	getAsNumber() convenience method to get this array as a Number if it contains a single element.
short	getAsShort() convenience method to get this array as a primitive short if it contains a single element.
String	getAsString() convenience method to get this array as a String if it contains a single element.
Iterator<JsonElement>	iterator() Returns an iterator to navigate the elemetns of the array.
int	size() Returns the number of elements in the array.

Methods inherited from class com.google.gson.JsonElement

getAsJsonArray, getAsJsonNull, getAsJsonObject, getAsJsonPrimitive, isJsonArray, isJsonNull, isJsonObject, isJsonPrimitive, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

JsonArray

public JsonArray()

Creates an empty JsonArray.

Method Detail

add

public void add(JsonElement element)

Adds the specified element to self.

Parameters:

element - the element that needs to be added to the array.

addAll

public void addAll(JsonArray array)

Adds all the elements of the specified array to self.

Parameters:

array - the array whose elements need to be added to the array.

size

public int size()

Returns the number of elements in the array.

Returns:

the number of elements in the array.

iterator

public Iterator<JsonElement> iterator()

Returns an iterator to navigate the elemetns of the array. Since the array is an ordered list, the iterator navigates the elements in the order they were inserted.

Specified by:

iterator in interface Iterable<JsonElement>

Returns:

an iterator to navigate the elements of the array.

get

public JsonElement get(int i)

Returns the ith element of the array.

Parameters:

i - the index of the element that is being sought.

Returns:

the element present at the ith index.

Throws:

IndexOutOfBoundsException - if i is negative or greater than or equal to the size() of the array.

getAsNumber

public Number getAsNumber()

convenience method to get this array as a Number if it contains a single element.

Overrides:

getAsNumber in class JsonElement

Returns:

get this element as a number if it is single element array.

Throws:

ClassCastException - if the element in the array is of not a JsonPrimitive and is not a valid Number.

IllegalStateException - if the array has more than one element.

getAsString

public String getAsString()

convenience method to get this array as a String if it contains a single element.

Overrides:

getAsString in class JsonElement

Returns:

get this element as a String if it is single element array.

Throws:

ClassCastException - if the element in the array is of not a JsonPrimitive and is not a valid String.

IllegalStateException - if the array has more than one element.

getAsDouble

public double getAsDouble()

convenience method to get this array as a double if it contains a single element.

Overrides:

getAsDouble in class JsonElement

Returns:

get this element as a double if it is single element array.

Throws:

ClassCastException - if the element in the array is of not a JsonPrimitive and is not a valid double.

IllegalStateException - if the array has more than one element.

getAsBigDecimal

public BigDecimal getAsBigDecimal()

convenience method to get this array as a BigDecimal if it contains a single element.

Overrides:

getAsBigDecimal in class JsonElement

Returns:

get this element as a BigDecimal if it is single element array.

Throws:

ClassCastException - if the element in the array is of not a JsonPrimitive.

NumberFormatException - if the element at index 0 is not a valid BigDecimal.

IllegalStateException - if the array has more than one element.

Since:

1.2

getAsBigInteger

public BigInteger getAsBigInteger()

convenience method to get this array as a BigInteger if it contains a single element.

Overrides:

getAsBigInteger in class JsonElement

Returns:

get this element as a BigInteger if it is single element array.

Throws:

ClassCastException - if the element in the array is of not a JsonPrimitive.

NumberFormatException - if the element at index 0 is not a valid BigInteger.

IllegalStateException - if the array has more than one element.

Since:

1.2

getAsFloat

public float getAsFloat()

convenience method to get this array as a float if it contains a single element.

Overrides:

getAsFloat in class JsonElement

Returns:

get this element as a float if it is single element array.

Throws:

ClassCastException - if the element in the array is of not a JsonPrimitive and is not a valid float.

IllegalStateException - if the array has more than one element.

getAsLong

public long getAsLong()

convenience method to get this array as a long if it contains a single element.

Overrides:

getAsLong in class JsonElement

Returns:

get this element as a long if it is single element array.

Throws:

ClassCastException - if the element in the array is of not a JsonPrimitive and is not a valid long.

IllegalStateException - if the array has more than one element.

getAsInt

public int getAsInt()

convenience method to get this array as an integer if it contains a single element.

Overrides:

getAsInt in class JsonElement

Returns:

get this element as an integer if it is single element array.

Throws:

ClassCastException - if the element in the array is of not a JsonPrimitive and is not a valid integer.

IllegalStateException - if the array has more than one element.

getAsByte

public byte getAsByte()

Description copied from class: JsonElement

convenience method to get this element as a primitive byte value.

Overrides:

getAsByte in class JsonElement

Returns:

get this element as a primitive byte value.

getAsCharacter

public char getAsCharacter()

Description copied from class: JsonElement

convenience method to get this element as a primitive character value.

Overrides:

getAsCharacter in class JsonElement

Returns:

get this element as a primitive char value.

getAsShort

public short getAsShort()

convenience method to get this array as a primitive short if it contains a single element.

Overrides:

getAsShort in class JsonElement

Returns:

get this element as a primitive short if it is single element array.

Throws:

ClassCastException - if the element in the array is of not a JsonPrimitive and is not a valid short.

IllegalStateException - if the array has more than one element.

getAsBoolean

public boolean getAsBoolean()

convenience method to get this array as a boolean if it contains a single element.

Overrides:

getAsBoolean in class JsonElement

Returns:

get this element as a boolean if it is single element array.

Throws:

ClassCastException - if the element in the array is of not a JsonPrimitive and is not a valid boolean.

IllegalStateException - if the array has more than one element.