Module platform

Package org.jfree.data.json.impl

Class JSONObject

java.lang.Object

java.util.AbstractMap<K,V>

java.util.HashMap

org.jfree.data.json.impl.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.

This class is for internal use by JFreeChart, it is not part of the supported API and you should not call it directly. If you need JSON support in your project you should include JSON.simple (https://code.google.com/p/json-simple/) or some other JSON library directly in your project.

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

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

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K extends Object,V extends Object>

Constructor Summary

Constructors

Constructor	Description
JSONObject()

Method Summary

Modifier and Type	Method	Description
String	toJSONString()	Returns a JSON string representing this object.
static String	toJSONString(Map map)	Convert a map to JSON text.
String	toString()	Returns a string representation of this object.
static String	toString(String key, Object value)	Returns a JSON string fragment containing the key and value.
void	writeJSONString(Writer out)	Writes a JSON string representing this object instance to the specified output writer.
static void	writeJSONString(Map map, Writer out)	Encode a map into JSON text and write it to out.

Methods inherited from class java.util.HashMap

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

Methods inherited from class java.util.AbstractMap

equals, hashCode

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.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

Constructor Details

JSONObject

public JSONObject()

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 - the map to write (null permitted).

out - the output writer (null not permitted).

Throws:

IOException - if there is an I/O problem.

See Also:

• JSONValue.writeJSONString(Object, Writer)

writeJSONString

public void writeJSONString(Writer out)
                     throws IOException

Writes a JSON string representing this object instance to the specified output writer.

Specified by:

writeJSONString in interface JSONStreamAware

Parameters:

out - the output writer (null not permitted).

Throws:

IOException - if there is an I/O problem.

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 - the map (null permitted).

Returns:

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

See Also:

• JSONValue.toJSONString(Object)

toJSONString

public String toJSONString()

Returns a JSON string representing this object.

Specified by:

toJSONString in interface JSONAware

Returns:

A JSON string.

toString

public String toString()

Returns a string representation of this object.

Overrides:

toString in class AbstractMap

Returns:

A string.

toString

public static String toString(String key,
 Object value)

Returns a JSON string fragment containing the key and value.

Parameters:

key - the key (null permitted).

value - the value (null permitted).

Returns:

A JSON string fragment.