need help with array list

I'm having difficulty in putting 16 characters into an array list. I'm using the letters ab开发者_JAVA技巧cdefghabcdegh.

Many thanks.

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does

"abcdefghabcdegh".toList()

work for your use-case?

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You provided very little information on what you are exactly trying to do, but this guide should help you on your way.