JavaでJSONオブジェクトをファイルに書き込むにはどうすればよいですか？

import java.io.*;
import java.util.*;
import org.json.simple.*;
import org.json.simple.parser.*;
public class JSONObjectWriterToFileTest {
   public static void main(String[] args) throws IOException {
      JSONObject obj = new JSONObject();
      obj.put("Name", "Adithya");
      obj.put("Course", "MCA");
      JSONArray subjects = new JSONArray();
      subjects.add("Subject1: DBMS");
      subjects.add("Subject2: JAVA");
      subjects.add("Subject3: PYTHON");
      obj.put("Subjects:", subjects);
      try (FileWriter file = new FileWriter("/Users/User/Desktop/course1.json")) {
         file.write(obj.toJSONString());
         System.out.println("JSON Object write to a File successfully");
         System.out.println("JSON Object: " + obj);
      }
   }
}

JSON Object write to a File successfully
JSON Object: {"Subjects:":["Subject1: DBMS","Subject2: JAVA","Subject3: PYTHON"],"Course":"MCA","Name":"Adithya"}