How to Delete a Document in MongoDB using Java

on March 1, 2017

Post Views: 3,105

Delete a Document in MongoDB using Java

In this example, We will show you sample program about, How to Delete a Document in MongoDB using Java. The example were tested and shared in the same post.

Insert Documents

/* 1 */
{
"_id" : 101,
"name" : "John",
"designation" : "Software Engineer"
}
/* 2 */
{
"_id" : 102,
"name" : "Dinesh",
"designation" : "Sr. Software Engineer"
}
/* 3 */
{
"_id" : 103,
"name" : "Smith",
"designation" : "Project Manager"
}
/* 4 */
{
"_id" : 104,
"name" : "William",
"designation" : "Software Engineer"
}
/* 5 */
{
"_id" : 105,
"name" : "James",
"designation" : "Business Analyst"
}

Example Program

package com.dineshkrish.mongo;
import org.bson.Document;
import com.mongodb.MongoClient;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoDatabase;
/**
* 
* @author Dinesh Krishnan
*
*/
public class DeleteDocument {
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");
// preparing delete query
Document query = new Document();
query.put("_id", 101);
// deleting the document
collection.deleteOne(query);
System.out.println("Document Deleted Successfully...");
// closing the client
client.close();
}
}