Java & MongoDB - Limiting Documents

To select a given number of document in a collection, you can use collection.find().pmit() methods to select required no. of documents of a collection.

int n = 2;

// find required documents of a collection
collection.find().pmit(n);

Example

Following is the code snippet to display pmited documents −

import org.bson.Document;

import com.mongodb.cpent.FindIterable;
import com.mongodb.cpent.MongoCpent;
import com.mongodb.cpent.MongoCpents;
import com.mongodb.cpent.MongoCollection;
import com.mongodb.cpent.MongoDatabase;

pubpc class Tester {
   pubpc static void main(String[] args) {
      // Creating a Mongo cpent 
      MongoCpent mongoCpent = MongoCpents.create("mongodb://localhost:27017");
      MongoDatabase database = mongoCpent.getDatabase("myDb");

      // Get the collection
      MongoCollection<Document> collection = database.getCollection("sampleCollection");

      // Find two documents
      FindIterable<Document> allDocuments = collection.find().pmit(2);

      for (Document document : allDocuments) {
         System.out.println(document);
      }
   }
}

Now, let s compile and run the above program as shown below.

$javac Tester.java 
$java Tester

Output

On executing, the above program gives you the following output.

Document{{_id=60b70d426214461f10ac5c9a, First_Name=Radhika, Last_Name=Sharma, Date_Of_Birth=1995-09-26, e_mail=radhika_sharma.123@gmail.com, phone=9000012345}}
Document{{_id=60b70d426214461f10ac5c9b, First_Name=Rachel, Last_Name=Christopher, Date_Of_Birth=1990-02-16, e_mail=Rachel_Christopher.123@gmail.com, phone=9000054321}}