Java

JSON: Access Array Values

See more JSON Examples

Demonstrates how to access values in a JSON array. Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.JsonArray;
import com.chilkatsoft.chilkat2.JsonObject;

public class ChilkatExample {

    public static void main(String[] args) {
        JsonObject json = new JsonObject();

        String jsonStr = "{ \"id\": 1, \"name\": \"A green door\", \"tags\": [\"home\", 22, \"green\"], \"price\": 125 }";

        try {
            json.load(jsonStr);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // Get the "tags" array, which contains "home", 22, "green"
        JsonArray tagsArray = json.arrayOf("tags");
        if (tagsArray == null) {
            System.out.println("tags member not found.");
            return;
        }

        // Get the value at each array index.
        // Output will be:
        // [0] = home
        // [0] as integer = 0
        // [1] = 22
        // [1] as integer = 22
        // [2] = green
        // [2] as integer = 0

        int arraySize = tagsArray.getSize();
        for (int i = 0; i < arraySize; i++) {
            String sValue = tagsArray.stringAt(i);

            System.out.println("[" + i + "] = " + sValue);

            int iValue = tagsArray.intAt(i);
            System.out.println("[" + i + "] as integer = " + iValue);
        }

        tagsArray.close();

        // Note: The StringAt method returns the value as a string regardless of the type.

        // The IntAt method returns the value as an integer.  If the value does not convert to
        // an integer, then 0 is returned.
    }
}