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- Processing Foundation

This reference is for Processing 3.0+. If you have a previous version, use the reference included with your software in the Help menu. If you see any errors or have suggestions, please let us know. If you prefer a more technical reference, visit the Processing Core Javadoc and Libraries Javadoc.

Class | JSONArray
Name | ### getJSONArray()
Examples |
    // The following short JSON file called "data.json" is parsed
    // in the code below. It must be in the project's "data" folder.
    //
    // [
    //   [
    //     { "name": "apple", "isFruit": true },
    //     { "name": "grape", "isFruit": true },
    //     { "name": "carrot", "isFruit": false }
    //   ],
    //   [
    //     { "name": "lettuce", "isFruit": false },
    //     { "name": "plum", "isFruit": true },
    //     { "name": "cinnamon", "isFruit": false }
    //   ]
    // ]

    JSONArray json;

    void setup() {

      json = loadJSONArray("data.json");

      // Get the first array of elements
      JSONArray values = json.getJSONArray(0);

      for (int i = 0; i < values.size(); i++) {

        JSONObject item = values.getJSONObject(i);

        String name = item.getString("name");
        boolean isFruit = item.getBoolean("isFruit");

        println(name + ", " + isFruit);
      }
    }

    // Sketch prints:
    // apple, true
    // grape, true
    // carrot, false
Description | Retrieves the JSONArray with the associated index value.
Syntax |
    .getJSONArray(index)
    .getJSONArray(index, defaultValue)
Parameters |
index | int: must be between 0 and length() - 1
Returns | JSONArray
Related | getJSONObject() setJSONObject() setJSONArray()

Updated on January 9, 2020 00:33:13pm EST