Package com.google.gwt.json.client

Class JSONObject

  • public class JSONObject
extends JSONValue
    Represents a JSON object. A JSON object consists of a set of properties.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean containsKey​(java.lang.String key)
      Tests whether or not this JSONObject contains the specified property.
      boolean equals​(java.lang.Object other)
      Returns true if other is a JSONObject wrapping the same underlying object.
      JSONValue get​(java.lang.String key)
      Gets the JSONValue associated with the specified property.
      JavaScriptObject getJavaScriptObject()
      Returns the underlying JavaScript object that this object wraps.
      (package private) JavaScriptObject getUnwrapper()
      Internal.
      int hashCode()  
      JSONObject isObject()
      Returns this, as this is a JSONObject.
      java.util.Set<java.lang.String> keySet()
      Returns the set of properties defined on this JSONObject.
      JSONValue put​(java.lang.String key, JSONValue jsonValue)
      Assign the specified property to the specified value in this JSONObject.
      int size()
      Determines the number of properties on this object.
      java.lang.String toString()
      Converts a JSONObject into a JSON representation that can be used to communicate with a JSON service.

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • JSONObject

        public JSONObject()

      • JSONObject

        public JSONObject​(JavaScriptObject jsValue)
        Creates a new JSONObject from the supplied JavaScript value.

    • Method Detail

      • containsKey

        public boolean containsKey​(java.lang.String key)
        Tests whether or not this JSONObject contains the specified property.
        Parameters:
        key - the property to search for
        Returns:
        true if the JSONObject contains the specified property

      • equals

        public boolean equals​(java.lang.Object other)
        Returns true if other is a JSONObject wrapping the same underlying object.
        Overrides:
        equals in class java.lang.Object

      • get

        public JSONValue get​(java.lang.String key)
        Gets the JSONValue associated with the specified property.
        Parameters:
        key - the property to access
        Returns:
        the value of the specified property, or null if the property does not exist
        Throws:
        java.lang.NullPointerException - if key is null

      • getJavaScriptObject

        public JavaScriptObject getJavaScriptObject()
        Returns the underlying JavaScript object that this object wraps.

      • hashCode

        public int hashCode()
        Overrides:
        hashCode in class java.lang.Object

      • isObject

        public JSONObject isObject()
        Returns this, as this is a JSONObject.
        Overrides:
        isObject in class JSONValue
        Returns:
        a reference to a JSONObject if this JSONValue is a JSONObject or null otherwise.

      • keySet

        public java.util.Set<java.lang.String> keySet()
        Returns the set of properties defined on this JSONObject. The returned set is immutable.

      • put

        public JSONValue put​(java.lang.String key,
                     JSONValue jsonValue)
        Assign the specified property to the specified value in this JSONObject. If the property already has an associated value, it is overwritten.
        Parameters:
        key - the property to assign
        jsonValue - the value to assign
        Returns:
        the previous value of the property, or null if the property did not exist
        Throws:
        java.lang.NullPointerException - if key is null

      • size

        public int size()
        Determines the number of properties on this object.

      • toString

        public java.lang.String toString()
        Converts a JSONObject into a JSON representation that can be used to communicate with a JSON service.
        Specified by:
        toString in class JSONValue
        Returns:
        a JSON string representation of this JSONObject instance