What does this Function do? (Homework help).

Question

I have this Assignment, and I can't figure out what this functions is actually trying to do.
public class float1{
     public static void main(String[]arg){
          int i = 1<< 30 + 65534;
          float x = (float) + 1;
          int j = (int) x - 1;
          System.out.println(j);
}     the int i = i<<30 + 65534; it's really confusing me. I have never seen that kind of statement in java. It prints 0 at the end, but if i change the numbers around, it will print a totally weird number.

Answer 1

http://java.sun.com/docs/books/tutorial/java/nutsandbolts/op3.html