Json Parse Failed- javafx - json

Question

I am writing javafx app
I try to sava and load data using JSON
#FXML
private void OpenEvent(ActionEvent event) throws IOException, ParseException, Exception {
String jsonString = new String();
FileReader fileReader = new FileReader("test.json");
BufferedReader bufferedReader = new BufferedReader(fileReader);
System.out.println("Check open event here");
String inputLine;
while ((inputLine = bufferedReader.readLine()) != null) {
jsonString += inputLine;
}
bufferedReader.close();
System.out.println(jsonString);
//GOOD HERE
JSONArray jlist;
try {
jlist = parseJsonArray(jsonString);
} catch (Exception ex) {
throw ex;
}
for (Object e : jlist) {
try {
JSONObject jentryParsed = (JSONObject) e;
LocalEvent entry = new LocalEvent();
entry.initFromJsonString(jentryParsed.toJSONString());
} catch (Exception ex) {
throw ex;
}
}
}
public JSONArray parseJsonArray(String jsonString) throws Exception {
JSONArray jlist;
JSONParser parser = new JSONParser();
System.out.println("Check parse here");
System.out.println(jsonString);
try {
jlist = (JSONArray) parser.parse(jsonString);
} catch (Exception ex) {
throw ex;
}
System.out.println("parsed finished");
if (jlist == null) {
System.out.println("jlist is null");
return null;
} else {
return jlist;
}
}
and here is my JSON file
[{"Description":"11111","Name":"11111","Datetime":2016-04-27},{"Description":"2222","Name":"2222","Datetime":2016-04-14}]
error:
Caused by: Unexpected token VALUE(-4) at position 54.
at org.json.simple.parser.JSONParser.parse(JSONParser.java:257)
at org.json.simple.parser.JSONParser.parse(JSONParser.java:81)
at org.json.simple.parser.JSONParser.parse(JSONParser.java:75)
at todolist.MainController.parseJsonArray(MainController.java:276)
at todolist.MainController.OpenEvent(MainController.java:250)
... 50 more
It seems the json parse is failed.
is here anything wrong with my JSON file?
Thanks!!!!!!!
or the parse cannot recognize "-" in the datetime??