Puzzling loop

Another fun Java puzzler that you would think you would never encounter in the wild but I happened to run across something similar a few days ago:

public class Puzzler {

 public static void main(String[] args) throws Exception {
  PuzzleFuction f = new PuzzleFuction();
  for (int i = 0; i < f.invoke(); i++) {
   System.out.println(i);
  }
 }

 public static class PuzzleFuction {

  private int invocationCount;

  public int invoke() {
   invocationCount++;
   return invocationCount < 2 ? 2 : 5;
  }
 }
}

What does this print? In other words: does the loop boundary (f.invoke()) get evaluated again every iteration? Of course it does! :-)

01234