Parse array list to array (SimpleEntry)

Question

I am trying to parse a generic array list to an array using standard methodology, but an error throws when converting an Object list to SimpleEntry list. Here is my code:

// Start with ArrayList of simple entries
AbstractMap.SimpleEntry<E, Integer>[] entries = (AbstractMap.SimpleEntry<E, Integer>[] ) new Object[arraylist.size()];
// Fill array with AL elements

What is the issue with this?

The error is as follows:

[Ljava.lang.Object; cannot be cast to [Ljava.util.AbstractMap$SimpleEntry;

Can you post all your code? What else do you have? – jhenrique Nov 13 '18 at 19:52 — jhenrique, Nov 13 '18 at 19:52

score 1 · Answer 1 · answered Nov 13 '18 at 20:02

Considering what you posted, you will have a list at the end, maybe this will help you:

        AbstractMap.SimpleEntry<E, Integer>[] entries2 = new AbstractMap.SimpleEntry[arr.size()];

        // or this      
        SimpleEntry<E, Integer>[]  entries =  new SimpleEntry[arr.size()];

Parse array list to array (SimpleEntry)

1 Answers1