我们在Java中什么时候可以使用JSONStringer？

import org.json.*;
public class JSONStringerTest1 {
   public static void main(String[] args) throws JSONException {
      JSONStringer stringer = new JSONStringer();
      String jsonStr = stringer
         .object() // Start JSON Object
            .key("Name")
            .value("Raja")
            .key("Age") //Add key-value pairs
            .value("25")
            .key("City")
            .value("Hyderabad")
         .endObject() // End JSON Object
         .toString();
      System.out.println(jsonStr);
   }
}

{"Name":"Raja","Age":"25","City":"Hyderabad"}<strong>
</strong>

import org.json.*;
public class JSONStringerTest2 {
   public static void main(String[] args) throws JSONException {
      JSONStringer stringer = new JSONStringer();
      String jsonStr = stringer
         .array() //Start JSON Array
            .object() //Start JSON Object
               .key("Name").value("Adithya")
               .key("Age").value("25") //Add key-value pairs
               .key("Mobile").value("9959984000")
            .endObject() //End JSON Object
            .object()
               .key("Address").value("Madhapur")
               .key("City").value("Hyderabad")
            .endObject()
         .endArray() //End JSON Array
         .toString();
      System.out.println(jsonStr);
   }
}

[{"Name":"Adithya","Age":"25","Mobile":"9959984000"},{"Address":"Madhapur","City":"Hyderabad"}]