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Java

edumorlom
edumorlom
4,073 Points
Posted by edumorlom
edumorlom
4,073 Points

Why doesn't the following for-loop running?

The following for-loop is being completely skipped. Can someone please help me out?

void moveAllCarsUp(int index){
        for (int i=index; i>0; i--){
            garage[i] = null;
        }
        garage[0] = null;
    }

2 Answers

doesitmatter
doesitmatter
12,885 Points

I'm assuming that within your car class you have an attribute named numberMoved? Again I don't see anything wrong with the code you've posted here, except for maybe a misuse of a name in the method setNumberMoved, a more suitable name would be incrementNumberMoved. And maybe to make it clear that numberMoved is not a static attribute you could write this.numberMoved++ instead.

If you're still stuck with this problem, post the complete code. Or try debugging yourself using a debugger, set a breakpoint somewhere useful within your code and you'll see what's wrong more easily when you run the code in debug mode.

edumorlom
edumorlom
4,073 Points
edumorlom
edumorlom
4,073 Points

Thank you! I did something different so that it would work but I don't understand why my previous code wasn't working. Anyways, it works now haha I'm studying Computer Science and this was a project so consider it project finished :)

doesitmatter
doesitmatter
12,885 Points
doesitmatter
doesitmatter
12,885 Points

There's nothing wrong with the code you've posted here, it correctly sets all values of the array with an index lower than the one passed to the method to null. So your problem is elsewhere. Can you post the entire code if this is possible?

edumorlom
edumorlom
4,073 Points
edumorlom
edumorlom
4,073 Points

I'm actually having a different issue now. Why isn't this working? It's supposed to add 1 to every carObject after the index. The for-loop runs but for some reason the setNumberMoved() method does not add one.

    void allCarsAfterPlusOne(int index) {
        for (int i = index + 1; i < garage.length; i++) {
            if (garage[i] != null) {
                garage[i].setNumberMoved();
            }
        }
    }

    public void setNumberMoved() {
        numberMoved++;
    }