The following commands were typed using mongo.exe client (assuming that the collection coll exists) :
> use database
switched to db database
>db.coll.drop()
True
How to perform db.coll.drop() using Mongo DB JAVA driver?
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2 Answers
I think this should work:
MongoClient mongoClient = new MongoClient();
DB db = mongoClient.getDB("mydb");
DBCollection myCollection = db.getCollection("myCollection");
myCollection.drop();
Comments
The current accepted answer would create a collection that did not previously exist and delete it, since getCollection creates one by the given name if it does not exist. It would be more efficient to check for existence first:
MongoClient mongoClient = new MongoClient();
DB db = mongoClient.getDB("mydb");
if (db.collectionExists("myCollection")) {
DBCollection myCollection = db.getCollection("myCollection");
myCollection.drop();
}
2 Comments
Chris Sprague
What version of the driver are you using? I am using 3.3.0 and couldn't find the
collectionExists method.
Rondo
I don't know what I was using back then.... that method still exists in 3.3 and 3.4... here are the 3.4 api docs: api.mongodb.com/java/3.3/com/mongodb/…