Problems with pop() using Deque in Java

Question

I've encountered a strange issue using a Deque.

I've reformatted my code twice now, and both forms has resulted in the same issue.

Whether i push() a String[] or an ArrayList<String> to the Deque (formatted appropriately for one or the other), it pop() 's as an Object. I cannot seem to use what so ever.

When i push() a String[] and then pop(), i cannot access indices. When i push() an ArrayList<String> and then pop(), i cannot use get() on it.

When i push() an element, it then pop() 's as something else. It says

"___ required, but Object found".

I don't understand why, or how i can use Deque successfully.

Kelvin Lai · Accepted Answer · 2015-11-13 01:45:42Z

2

You need to explicitly cast your the variable returned by pop() to its original type e.g. String[] or ArrayList.

answered Nov 13, 2015 at 1:45

Kelvin Lai

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1 Comment

CoshCaust Over a year ago

I thought i tried this, but i must have made some silly mistake. This is embarrassing- but thank you!

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