Package org.jfree.data.json.impl

Class JSONObject

  • All Implemented Interfaces:
    java.io.Serializable, java.lang.Cloneable, java.util.Map, JSONAware, JSONStreamAware
    public class JSONObject
extends java.util.HashMap
implements java.util.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

        java.util.AbstractMap.SimpleEntry<K extends java.lang.Object,​V extends java.lang.Object>, java.util.AbstractMap.SimpleImmutableEntry<K extends java.lang.Object,​V extends java.lang.Object>

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

        java.util.Map.Entry<K extends java.lang.Object,​V extends java.lang.Object>

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private static long serialVersionUID  

    • Constructor Summary

      Constructors 
      Constructor Description
      JSONObject()  

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      java.lang.String toJSONString()
      Returns a JSON string representing this object.
      private static java.lang.String toJSONString​(java.lang.String key, java.lang.Object value, java.lang.StringBuffer sb)
      Writes a key and value to a JSON string.
      static java.lang.String toJSONString​(java.util.Map map)
      Convert a map to JSON text.
      java.lang.String toString()
      Returns a string representation of this object.
      static java.lang.String toString​(java.lang.String key, java.lang.Object value)
      Returns a JSON string fragment containing the key and value.
      void writeJSONString​(java.io.Writer out)
      Writes a JSON string representing this object instance to the specified output writer.
      static void writeJSONString​(java.util.Map map, java.io.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 Detail

      • JSONObject

        public JSONObject()

    • Method Detail

      • writeJSONString

        public static void writeJSONString​(java.util.Map map,
                                   java.io.Writer out)
                            throws java.io.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:
        java.io.IOException - if there is an I/O problem.
        See Also:
        JSONValue.writeJSONString(Object, Writer)

      • writeJSONString

        public void writeJSONString​(java.io.Writer out)
                     throws java.io.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:
        java.io.IOException - if there is an I/O problem.

      • toJSONString

        public static java.lang.String toJSONString​(java.util.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 java.lang.String toJSONString()
        Returns a JSON string representing this object.
        Specified by:
        toJSONString in interface JSONAware
        Returns:
        A JSON string.

      • toJSONString

        private static java.lang.String toJSONString​(java.lang.String key,
                                             java.lang.Object value,
                                             java.lang.StringBuffer sb)
        Writes a key and value to a JSON string.
        Parameters:
        key - the key (null permitted).
        value - the value (null permitted).
        sb - a string buffer (null not permitted).
        Returns:
        A JSON string fragment representing the key and value.

      • toString

        public java.lang.String toString()
        Returns a string representation of this object.
        Overrides:
        toString in class java.util.AbstractMap
        Returns:
        A string.

      • toString

        public static java.lang.String toString​(java.lang.String key,
                                        java.lang.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.