How can we write JSON object to file in Java?

JSON is one of the widely used data exchange formats. It is a lightweight and language-independent format. json.simple is a lightweight JSON processing library that can be used to write JSON files, and can also be used to encode or decode JSON text, and is fully compliant with the JSON specification (RFC4627). In order to read the JSON file, we need to download the json-simple.jar file and set the path to execute it.

Example

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);
      }
   }
}

course1.json file

##Output

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

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