Java developers

public class NegativeShift {
  public static void main(String[] args) {
    System.out.print(8 << -1);
  }
}

What would be the output? And how does this work?

This isn't purely a Java question, but I figure I'll throw it out there because it's bugging the heck out of me and maybe someone will get their kicks helping me sort out how to do this. I swear, I should be able to figure this out, but it's a combination of greedy/non-greedy behavior that I just can't wrap my head around.

( The re problem I'm havingCollapse )