How to query documents using “_id” field in Java mongodb driver?

Question

I am trying to find documents in MongoDB by searching on \"_id\" key. My document looks like this-

{
  \"_id\" : ObjectId(\"4f693d40e4b04cde19f17205\"),
  \"         


        

Answer 1

For those who are seeking a more up to date method, especially with 3.4:

import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoDatabase;
import org.bson.Document;
import org.bson.types.ObjectId;

import static com.mongodb.client.model.Filters.eq;

//......
MongoCollection myCollection = database.getCollection("myCollection");
Document document = myCollection.find(eq("_id", new ObjectId("4f693d40e4b04cde19f17205"))).first();
if (document == null) {
    //Document does not exist
} else {
    //We found the document
}