Java

Append New Item to JSON Array

See more JSON Examples

Demonstrates the notations that can be used in a JSON array index to append to the end of an array. Chilkat2 Java

import com.chilkatsoft.chilkat2.JsonObject;

public class ChilkatExample {

    public static void main(String[] args) {
        // Starting in Chilkat v9.5.0.77, the following notations are possible to specify that the value
        // should be appended to the end of the array. (In other words, if the array currenty has N elements, then "-1", "", or "*"
        // indicate an index of N+1.

        JsonObject json = new JsonObject();

        json.updateInt("lanes[-1]", 0);
        json.updateInt("lanes[]", 1);
        json.updateInt("lanes[*]", 2);
        json.updateInt("lanes[-1]", 3);

        System.out.println(json.emit());

        // Output is:  {"lanes":[0,1,2,3]}
    }
}