Conversion from String to MongoDB ObjectID

Question

I tried converting my String ID to MongoDB ObjectID

public class relevancy_test extends  Object implements Comparable {
    public static voi         


        

Answer 1

ObjectId is a 12-byte BSON type

Here your string "8001_469437317594492928_1400737805000" is not 12 byte BSON type. so update according to ObjectId

To generate a new ObjectId using the ObjectId() constructor with a unique hexadecimal string:

var stringObjectId = ObjectId("507f191e810c19729de860ea");

Please make string correct to convert string to objectId.