Solved Java.util.NoSuchElementException help

Hello. I'm working on a project that uses iterators. This code below is throwing a NoSuchElementException. Everywhere I can find says that the best fix for a NoSuchElementException is adding a while loop with iterator.hasNext(). However, my code already has a while loop. If anyone could explain to me why this might be happening I would be very grateful.

the code:

Code:

                Iterator<Shipyard> itr = Shipyards.iterator();
                while (itr.hasNext()){
                    try {
                        itr.next().time --;
                        itr.next().sign.setLine(3, Integer.toString(itr.next().time));
                        itr.next().sign.update();
                        if (itr.next().time <= 0){
                            itr.next().unRent();
                            itr.remove();
                        }
                    } catch (MaxChangedBlocksException e) {
                        e.printStackTrace();
                    }
                }

 

Its because you call itr.next() multiple times, so in your case you already jump 5 times ahead

 

ah, thanks. So I should do something like Shipyard s = itr.next() and then use that.

thanks you very much!

 

yes. You might need to cast it to Shipyard though, but your IDE should hint you on that