MongoDB Get all Documents using Java

In this example, We will show you simple program about, How to perform MongoDB get all documents using Java. The example program has been tested with mongodb server 3.4.2 environment and output were shared in the same post.

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Mongodb Get all Documents using Java

Example Program

package com.dineshkrish.mongo;
import org.bson.Document;
import com.mongodb.MongoClient;
import com.mongodb.client.FindIterable;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoCursor;
import com.mongodb.client.MongoDatabase;
/**
* 
* @author Dinesh Krishnan
*
*/
public class GetDocuments {
public static void main(String[] args) {
// host name
final String HOST_NAME = "localhost";
// default port number
final int PORT = 27017;
// creating mongo client object
MongoClient client = new MongoClient(HOST_NAME, PORT);
// selecting the mongo database
MongoDatabase database = client.getDatabase("dineshkrish");
// selecting the mongo collection
MongoCollection<Document> collection = database.getCollection("employee_records");
// getting the all documents from collection
FindIterable<Document> documents = collection.find();
// preparing for an iteration
MongoCursor<Document> cursor = documents.iterator();
System.out.printf("%-10s %-10s %-15s %n", "ID", "Name", "Designation");
System.out.println("----------------------------------------------");
// iterating the documents
while(cursor.hasNext()) {
Document document = cursor.next();
System.out.printf("%-10s %-10s %-15s %n", document.get("_id"), document.get("name"), document.get("designation"));
}
// closing the connection
client.close();
}
}

Output

ID Name Designation
———————————————-
101 John Software Engineer
102 Dinesh Sr. Software Engineer
103 Smith Project Manager
104 William Software Engineer
105 James Business Analyst

References

1. MongoDB Java API Documentation
2. JavaDoc – MongoClient Class
3. JavaDoc – MongoDatabase Interface
4. JavaDoc – Document Class

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