How do I correctly instantiate an arraylist of int arraylists in java?

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Javascript

Java

JavaSE6

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Also, can I add an int into the 2nd ArrayList in the ArrayList containing int ArrayLists by doing for example:
lets say the ArrayList containing int ArrayLists is called holder, and I want to add the int value 10 into the 2nd (at index 1 of holder) int ArrayList in holder.

holder.get(1).add(10);

Is that correct?

What I have tried:

I can't find this on any of the first pages of google and I'm not sure if this can be done.