{"message": "Donnes invalides"}} "message": "Donnes invalides" public void saveErreur() { JSONObject jsonObjdonne Invalide = new JSONObject(); jsonObjdonne Invalide.put( "message", "Donnes invalides"); What I have try (FileWriter f = new FileWriter(outputFile)) { f.write(jsonobjdonne Invalide.toString( indentFactor: 3)); f. flush(); f.close(); }catch (IOException e) { System.out.println("criture impossible dans le fichier JSON"); What's needed The used method {"message": "Donnes invalides"}} "message": "Donnes invalides" public void saveErreur() { JSONObject jsonObjdonne Invalide = new JSONObject(); jsonObjdonne Invalide.put( "message", "Donnes invalides"); What I have try (FileWriter f = new FileWriter(outputFile)) { f.write(jsonobjdonne Invalide.toString( indentFactor: 3)); f. flush(); f.close(); }catch (IOException e) { System.out.println("criture impossible dans le fichier JSON"); What's needed The used method