Using JSONValue object, we can create a JSON which comprises of primitives, Map and List.
Following example illustrates the above concept.
import java.io.IOException; import java.util.LinkedHashMap; import java.util.LinkedList; import java.util.List; import java.util.Map; import org.json.simple.JSONValue; class JsonDemo { public static void main(String[] args) throws IOException { Map m1 = new LinkedHashMap(); m1.put("k11","v11"); m1.put("k12","v12"); m1.put("k13", "v13"); List l1 = new LinkedList(); l1.add(m1); l1.add(new Integer(100)); String jsonString = JSONValue.toJSONString(l1); System.out.println(jsonString); } }
[{"k11":"v11","k12":"v12","k13":"v13"},100]