Module org.jfree.chart

Package org.jfree.data.json

Class JSONUtils

java.lang.Object

org.jfree.data.json.JSONUtils

public class JSONUtils
extends Object

A utility class that can read and write data in specific JSON formats.

Since:

1.0.20

Constructor Summary

Constructors

Constructor	Description
JSONUtils()

Method Summary

Modifier and Type	Method	Description
static String	writeKeyedValues(KeyedValues data)	Returns a string containing the data in JSON format.
static void	writeKeyedValues(KeyedValues data, Writer writer)	Writes the data in JSON format to the supplied writer.
static String	writeKeyedValues2D(KeyedValues2D data)	Returns a string containing the data in JSON format.
static void	writeKeyedValues2D(KeyedValues2D data, Writer writer)	Writes the data in JSON format to the supplied writer.

Methods inherited from class java.lang.Object

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

Constructor Detail

JSONUtils

public JSONUtils()

Method Detail

writeKeyedValues

public static String writeKeyedValues(KeyedValues data)

Returns a string containing the data in JSON format. The format is an array of arrays, where each sub-array represents one data value. The sub-array should contain two items, first the item key as a string and second the item value as a number. For example: [["Key A", 1.0], ["Key B", 2.0]]

Note that this method can be used with instances of PieDataset.

Parameters:

data - the data (null not permitted).

Returns:

A string in JSON format.

writeKeyedValues

public static void writeKeyedValues(KeyedValues data,
                                    Writer writer)
                             throws IOException

Writes the data in JSON format to the supplied writer.

Note that this method can be used with instances of PieDataset.

Parameters:

data - the data (null not permitted).

writer - the writer (null not permitted).

Throws:

IOException - if there is an I/O problem.

writeKeyedValues2D

public static String writeKeyedValues2D(KeyedValues2D data)

Returns a string containing the data in JSON format. The format is...

Note that this method can be used with instances of CategoryDataset.

Parameters:

data - the data (null not permitted).

Returns:

A string in JSON format.

writeKeyedValues2D

public static void writeKeyedValues2D(KeyedValues2D data,
                                      Writer writer)
                               throws IOException

Writes the data in JSON format to the supplied writer.

Note that this method can be used with instances of CategoryDataset.

Parameters:

data - the data (null not permitted).

writer - the writer (null not permitted).

Throws:

IOException - if there is an I/O problem.