Ecrire,en java,dans un fichier .json

package hacktrack.createfile;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;

public class CreateJSONFileDemo {

	public static void main(String[] args) {
		String cheminDuFichier = "D:/adil/exemple.txt";
		
		String jsonContent = "\"developers\":[{\"firstName\": \"Hack\",\"lastName\": \"Track\"},{\"firstName\": \"ad\",\"lastName\": \"il\"}]";
		File file = new File(cheminDuFichier);

		try {
			if (!file.exists())
				file.createNewFile();
			FileWriter writer = new FileWriter(file);
			writer.write(jsonContent);
			writer.flush();
			writer.close();
		} catch (IOException e) {
			System.out.println("Erreur: impossible de créer le fichier '"
					+ cheminDuFichier + "'");
		}
	}
}