Class JSONObject

java.lang.Object

java.util.AbstractMap

java.util.HashMap

org.json.simple.JSONObject

All Implemented Interfaces:

Serializable, Cloneable, Map, JSONAware, JSONStreamAware

public class JSONObject
extends HashMap
implements Map, JSONAware, JSONStreamAware

A JSON object. Key value pairs are unordered. JSONObject supports java.util.Map interface.

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class AbstractMap

AbstractMap.SimpleEntry<K,V>, AbstractMap.SimpleImmutableEntry<K,V>

Nested classes/interfaces inherited from interface Map

Map.Entry<K,V>

Field Summary

Fields

Modifier and Type	Field	Description
private static final long	serialVersionUID

Constructor Summary

Constructors

Constructor	Description
JSONObject()
JSONObject(Map map)	Allows creation of a JSONObject from a Map.

Method Summary

Modifier and Type	Method	Description
static String	escape(String s)	Escape quotes, \, /, \r, \n, \b, \f, \t and other control characters (U+0000 through U+001F).
String	toJSONString()
private static String	toJSONString(String key, Object value, StringBuffer sb)
static String	toJSONString(Map map)	Convert a map to JSON text.
String	toString()
static String	toString(String key, Object value)
void	writeJSONString(Writer out)	write JSON string to out.
static void	writeJSONString(Map map, Writer out)	Encode a map into JSON text and write it to out.

Methods inherited from class HashMap

clear, clone, compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, entrySet, forEach, get, getOrDefault, isEmpty, keySet, merge, newHashMap, put, putAll, putIfAbsent, remove, remove, replace, replace, replaceAll, size, values

Methods inherited from class AbstractMap

equals, hashCode

Methods inherited from class Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface Map

clear, compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, entrySet, equals, forEach, get, getOrDefault, hashCode, isEmpty, keySet, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, replaceAll, size, values

Field Details

serialVersionUID

private static final long serialVersionUID

See Also:

• Constant Field Values

Constructor Details

JSONObject

public JSONObject()

JSONObject

public JSONObject(Map map)

Allows creation of a JSONObject from a Map. After that, both the generated JSONObject and the Map can be modified independently.

Parameters:

map -

Method Details

writeJSONString

public static void writeJSONString(Map map,
 Writer out)
                            throws IOException

Encode a map into JSON text and write it to out. If this map is also a JSONAware or JSONStreamAware, JSONAware or JSONStreamAware specific behaviours will be ignored at this top level.

Parameters:

map -

out -

Throws:

IOException

See Also:

• JSONValue.writeJSONString(Object, Writer)

writeJSONString

public void writeJSONString(Writer out)
                     throws IOException

Description copied from interface: JSONStreamAware

write JSON string to out.

Specified by:

writeJSONString in interface JSONStreamAware

Throws:

IOException

toJSONString

public static String toJSONString(Map map)

Convert a map to JSON text. The result is a JSON object. If this map is also a JSONAware, JSONAware specific behaviours will be omitted at this top level.

Parameters:

map -

Returns:

JSON text, or "null" if map is null.

See Also:

• JSONValue.toJSONString(Object)

toJSONString

public String toJSONString()

Specified by:

toJSONString in interface JSONAware

Returns:

JSON text

toJSONString

private static String toJSONString(String key,
 Object value,
 StringBuffer sb)

toString

public String toString()

Overrides:

toString in class AbstractMap

toString

public static String toString(String key,
 Object value)

escape

public static String escape(String s)

Escape quotes, \, /, \r, \n, \b, \f, \t and other control characters (U+0000 through U+001F). It's the same as JSONValue.escape() only for compatibility here.

Parameters:

s -

Returns:

See Also:

• JSONValue.escape(String)