Package org.jfree.data.json.impl

Class JSONValue

java.lang.Object

org.jfree.data.json.impl.JSONValue

public class JSONValue
extends Object

Utility methods for JSON values.

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.

Constructor Summary

Constructors

Constructor	Description
JSONValue()

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).
static String	toJSONString(Object value)	Convert an object to JSON text.
static void	writeJSONString(Object value, Writer out)	Encode an object into JSON text and write it to out.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

JSONValue

public JSONValue()

Method Details

writeJSONString

public static void writeJSONString(Object value,
 Writer out)
                            throws IOException

Encode an object into JSON text and write it to out.

If this object is a Map or a List, and it's also a JSONStreamAware or a JSONAware, JSONStreamAware or JSONAware will be considered firstly.

DO NOT call this method from writeJSONString(Writer) of a class that implements both JSONStreamAware and (Map or List) with "this" as the first parameter, use JSONObject.writeJSONString(Map, Writer) or JSONArray.writeJSONString(List, Writer) instead.

Parameters:

value - the value.

out - the output writer.

Throws:

IOException - if there is an I/O problem.

See Also:

• JSONObject.writeJSONString(Map, Writer)
• JSONArray.writeJSONString(List, Writer)

toJSONString

public static String toJSONString(Object value)

Convert an object to JSON text.

If this object is a Map or a List, and it's also a JSONAware, JSONAware will be considered firstly.

DO NOT call this method from toJSONString() of a class that implements both JSONAware and Map or List with "this" as the parameter, use JSONObject.toJSONString(Map) or JSONArray.toJSONString(List) instead.

Parameters:

value - the value.

Returns:

JSON text, or "null" if value is null or it's an NaN or an INF number.

See Also:

• JSONObject.toJSONString(Map)
• JSONArray.toJSONString(List)

escape

public static String escape(String s)

Escape quotes, \, /, \r, \n, \b, \f, \t and other control characters (U+0000 through U+001F).

Parameters:

s - the string to be escaped (null permitted).

Returns:

A string.