How Do I Access and Process JSON Array Objects in Java?

Accessing JSON Array Objects in Java

Accessing string values within a JSONArray in Java requires understanding how to navigate the JSON structure and retrieve the desired data.

Given a JSON object like the one provided:

{
  "locations": {
    "record": [
      {
        "id": 8817,
        "loc": "NEW YORK CITY"
      },
      {
        "id": 2873,
        "loc": "UNITED STATES"
      },
      {
        "id": 1501
        "loc": "NEW YORK STATE"
      }
    ]
  }
}

To access the "id" and "loc" values in a for loop, use the following code:

JSONArray recs = req.getJSONObject("locations").getJSONArray("record");

for (int i = 0; i < recs.length(); ++i) {
    JSONObject rec = recs.getJSONObject(i);
    int id = rec.getInt("id");
    String loc = rec.getString("loc");
    // ... (Process the data as needed)
}

This code iterates through the records array, accessing each record as a JSON object. It then retrieves the "id" value as an integer using getInt("id") and the "loc" value as a string using getString("loc"). The processed data can then be used in subsequent operations.

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