Java's biggest risk towards continued adoption, by far, is the culture surrounding it - old Java programmers and old Java programs continue to be needlessly verbose, even if the language now has the tools (pretty much) to be as terse as other popular, modern languages.
It's an uphill battle, but it might just climb the hill because it's still such a behemoth.
It's an uphill battle, but it might just climb the hill because it's still such a behemoth.