String Interpolation a json object with %

Question

I am trying to send a custom payload to a String in Java. In this case, a JSON Object.

Ordinarily, if I wanted to send a decimal to a string I might do something like this

String myDecimal = "my decimal is %d";
System.out.println(String.format(myDecimal, 20)); // print "my decimal is 20)

However, instead of sending a decimal, or a string (%s), I would like to send a JSON object. Is this possible, if so how?

Answer 1

As far as I know, you cannot pass an object. so far, my best solution has been passing strings formatted to be like a JSON object, then parsing it into a JSON Object.

Example

class Main {
  private static String EXT_EVENT = "{" +
            "    \"version\": \"1.0\"," +
            "    \"method\": \"Event\"," +
            "    \"target\": \"ExamppleTarget\"," +
            "    \"name\": \"OnEventReceived\"," +
            "    \"payload\": { \"header\": %1$s," +
            "                   \"endpoint\": %2$s, " +
            "                   \"payload\": %3$s }" +
            "}";
  public static void main(String[] args) {
    String example = String.format(EXT_EVENT,"test1", "test2", "test3");
    System.out.println(example);
  }
}