how to create mongoDB objectid in java

To create objectId programmatically, use the following syntax

Map<String,String> objectId = new HashMap<String,String>();
objectId.put("$oid","5399aba6e4b0ae375bfdca88");

Then insert into mongodb.

To create objectId programmatically, use the following syntax

import org.bson.types.ObjectId;


ObjectId id1 = new ObjectId();
ObjectId id2 = ObjectId.get();

// In case you want to mention the parent ID itself,
ObjectId id3 = new ObjectId("5399aba6e4b0ae375bfdca88");