Not going to say much, the first link that is coming on google related to streams in JAVA is :
So, I started using streams and lambdas to get hands-on, and in between i stumbled on this article. So while this article gave me a very very simple example to start with to migrate java 7 code to java 8, it also gave me a view point, that changed my point of view about java 8 .
One word :
Ok , two words maybe.
But yes, as per statistics shown, streams take way more time than old school imperative programming will.
Moreover, and no one can deny that, stream code is less readable, or are minds are nourished by old java programming so much so that it is not ready to accept Java 8 stream programming .