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Java & MongoDB - Update Document
To update a document in a collection, you can use collection.updateOne() method to update a particular document of a collection.
collection.updateOne(filter,update);
Example
Following is the code snippet to update and display updated document −
import java.util.ArrayList; import java.util.List; import org.bson.Document; import com.mongodb.client.FindIterable; import com.mongodb.client.MongoClient; import com.mongodb.client.MongoClients; import com.mongodb.client.MongoCollection; import com.mongodb.client.MongoDatabase; import com.mongodb.client.model.Filters; import com.mongodb.client.model.Updates; public class Tester { public static void main(String[] args) { // Creating a Mongo client MongoClient mongoClient = MongoClients.create("mongodb://localhost:27017"); MongoDatabase database = mongoClient.getDatabase("myDb"); // Get the collection MongoCollection<Document> collection = database.getCollection("sampleCollection"); // Find all documents collection.updateOne(Filters.eq("First_Name","Mahesh"), Updates.set("e_mail", "maheshparashar@gmail.com")); System.out.println("Document Updated."); System.out.println("***Updated Document***"); // Select a particular document FindIterable<Document> documents = collection.find(Filters.eq("First_Name","Mahesh")); for (Document document : documents) { 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 Updated. ***Updated Document*** Document{{_id=60b70d426214461f10ac5c99, First_Name=Mahesh, Last_Name=Parashar, Date_Of_Birth=1990-08-21, e_mail=maheshparashar@gmail.com, phone=9034343345}}
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