Examples of javax.json.JsonArray

javax.json.JsonArray
{@code JsonArray} class represents an immutable JSON array value(an ordered sequence of zero or more values). It also provides unmodifiable list view to the JSON array values.
A JsonArray instance can be created from a input source using {@link JsonReader#readArray()}. For example:
```
 JsonReader jsonReader = new JsonReader(...); JsonArray array = jsonReader.readArray(); jsonReader.close(); 
```
It can also be built from scratch using a {@link JsonArrayBuilder}.
For example 1: An empty JSON array can be built as follows:
```
 JsonArray array = new JsonArrayBuilder().build(); 
```
For example 2: The following JSON
```
 [ { "type": "home", "number": "212 555-1234" }, { "type": "fax", "number": "646 555-4567" } ] 
```
can be built using :
```
 JsonArray value = new JsonArrayBuilder() .add(new JsonObjectBuilder() .add("type", "home") .add("number", "212 555-1234")) .add(new JsonObjectBuilder() .add("type", "fax") .add("number", "646 555-4567")) .build(); 
```
{@code JsonArray} can be written to JSON as follows:
```
 JsonArray arr = ...; JsonWriter writer = new JsonWriter(...) writer.writeArray(arr); writer.close(); 
```
{@code JsonArray} values can be {@link JsonObject}, {@link JsonArray}, {@link JsonString}, {@link JsonNumber}, {@link JsonValue#TRUE}, {@link JsonValue#FALSE}, {@link JsonValue#NULL}. These values can be accessed using various accessor methods.
In the above example 2, home number "212 555-1234" can be got using:
```
 JsonObject home = array.getValue(0, JsonObject.class); String number = home.getStringValue("number"); 
```
This list object provides read-only access to the JSON array data, and attempts to modify the list, whether direct or via its collection views, result in an {@code UnsupportedOperationException}. @author Jitendra Kotamraju

    }
    String roomName = roomDescription.getString("name");
    if (roomName != null) {
      room.setName(roomName);
    }
    JsonArray sensors = roomDescription.getJsonArray("sensors");
    if (sensors != null) {
      for (JsonObject sensorDescription : sensors
          .getValuesAs(JsonObject.class)) {
        ISensor sensor = (ISensor) Class.forName(
            sensorDescription.getString("class")).newInstance();
        sensor.setId(sensorDescription.getJsonNumber("id").longValue());
        room.addSensor(sensor);
        sensorMap.put(sensorDescription.getInt("id"), sensor);
      }
    }
    JsonArray actuators = roomDescription.getJsonArray("actuators");
    if (actuators != null) {
      for (JsonObject actuatorDescription : actuators
          .getValuesAs(JsonObject.class)) {
        IActuator actuator = (IActuator) Class.forName(
            actuatorDescription.getString("class")).newInstance();
        actuator.setId(actuatorDescription.getJsonNumber("id")
            .longValue());
        room.addActuator(actuator);
        actuatorMap.put(actuatorDescription.getInt("id"), actuator);
      }
    }
    JsonArray controllers = roomDescription.getJsonArray("controllers");
    if (controllers != null) {
      for (JsonObject controllerDescription : controllers
          .getValuesAs(JsonObject.class)) {
        IController controller = (IController) Class.forName(
            controllerDescription.getString("class")).newInstance();
        controller.setId(controllerDescription.getJsonNumber("id")
            .longValue());
        JsonArray sensorArray = controllerDescription
            .getJsonArray("sensors");
        if (sensorArray != null) {
          for (JsonNumber sensorId : sensorArray
              .getValuesAs(JsonNumber.class)) {
            controller.attachSensor(sensorMap.get(sensorId
                .intValue()));
          }
        }
        JsonArray actuatorArray = controllerDescription
            .getJsonArray("actuators");
        if (actuatorArray != null) {
          for (JsonNumber actuatorId : actuatorArray
              .getValuesAs(JsonNumber.class)) {
            controller.attachActuator(actuatorMap.get(actuatorId
                .intValue()));
          }
        }

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    JsonNumber brightness = simulationObject.getJsonNumber("brightness");
    if (brightness != null) {
      simulation.getContext().setBrightness(brightness.doubleValue());
    }


    JsonArray colorArray = simulationObject.getJsonArray("lightColor");
    if (colorArray != null && colorArray.size() == 3) {
      simulation.getContext().setLightColor(
          new int[] { colorArray.getInt(0), colorArray.getInt(1),
              colorArray.getInt(2) });
    }


    JsonArray rooms = simulationObject.getJsonArray("rooms");
    if (rooms != null) {
      for (JsonObject roomDescription : rooms
          .getValuesAs(JsonObject.class)) {
        Room room = readRoom(roomDescription);
        simulation.addRoom(room);
      }
    }

View Full Code Here

            out.println("<br><br>Reading an array with two objects<br>");
            jsonReader = Json.createReader(new StringReader("["
                    + "  { \"apple\":\"red\" },"
                    + "  { \"banana\":\"yellow\" }"
                    + "]"));
            JsonArray jsonArr = jsonReader.readArray();
            out.println(jsonArr);


            out.println("<br><br>Reading a nested structure<br>");
            jsonReader = Json.createReader(new StringReader("{"
                    + "  \"title\":\"The Matrix\","

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            json = jsonReader.readObject();
            out.println(json);


            out.println("<br><br>Reading an array with two objects<br>");
            jsonReader = Json.createReader(servletContext.getResourceAsStream("/3.json"));
            JsonArray jsonArr = jsonReader.readArray();
            out.println(jsonArr);


            out.println("<br><br>Reading a nested structure<br>");
            jsonReader = Json.createReader(servletContext.getResourceAsStream("/4.json"));
            json = jsonReader.readObject();

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