You can do this in Java as follows :
BasicDBList list = new BasicDBList();
list.add("Mick Jagger");
list.add("Bob Dyla");
list.add("Tony Orlando");
QueryBuilder qb = new QueryBuilder();
qb.put("person_name").in(list);
or
BasicDBList list = new BasicDBList();
list.add("Mick Jagger");
list.add("Bob Dyla");
list.add("Tony Orlando");
DBObject query = new BasicDBObject();
query.put("person_name", new BasicDBObject("$in", list));