I need help setting the attributes of objects inside a List

Asked May 07 '16 at 22:30

Active May 07 '16 at 22:30

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Let's get to the point. I'm using a LinkedList to store some info about the objects it store. The thing is, I can't set all the attributes of the objects right when I create it, so I need to access them later. In fact, this is the piece of code where I access it.

listaNodos.get(esteNodo(nodoActual)).caminoVuelta.getLast().setFin(currentGrid); listaNodos.get(esteNodo(nodoActual)).caminoVuelta.getLast().setPath(caminoVuelta);

Just as a clarification: caminoVuelta is also a LinkedList. So, can I modify the atributes of the instances stored in caminoVuelta by simply accessing them with getLast() method from LinkedList and then using the set() methods? Or will this change never happen to the original object?

For some reason, (and it only happens for the first node(Nodo) I create) it returns a NullPointerException.

I hope it's clear enough. Thanks.

asked May 07 '16 at 22:30

Hugo Romacho

have you initialized these lists ? – Em Ae May 07 '16 at 22:32
It sounds like `caminoVuelta` is `null`. – Elliott Frisch May 07 '16 at 22:36
Only Superman can debug a `NullPointerException` without the code and the stacktrace. And that's when he's at his top. – Dici May 07 '16 at 22:39

I need help setting the attributes of objects inside a List

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