#tip #mongo #limit

Interesting thing with mongo quering
Do you know result of db.myCollection.find().limit(0)?
It will be the same to db.myCollection.find() and return everything from collection
What about such thing db.myCollection.find().limit(-12)? Will it work at all?
Yes It will return the same to db.myCollection.find().limit(+12)

#tip #java

If you are not 100% sure prefer String.valueOf(value) over new String(value).

Inside valueOf method we have check on null so that you'll never get NPE