It ' s simply what the devs knew back then when Hadoop was born at Yahoo . Java was really popular back then . I ' m sure cross platform was a factor but I don ' t think it was the focus . Also the way Java handles memory management with JVMs is very nice . Devs don ' t have to worry about memory management so much . As hadoop being a memory hog I ' m sure Java exposed some nice features they could build on at the time . <| sep |> There are decentralized VPN ' s using blockchain technology , which is pretty hard to stop . <| sep |> Do they piss on the viewer ? On each other ? Or just into bowls ? <| sep |> it would probably come as a surprise to you and many other Americans that it is only within the propaganda you Americans educate yourselves with , that you are seen as global leaders . I can tell you clearly , that nowhere else in the world are Americans or America seen as global leaders . you are about to find out just how irrelevant the US is in world affairs after having elected this sociopath as your leader .