Increment certain values in an ArrayList.

I needed to add 1 to certain values in an ArrayList and this was the only way I could figure it out easily.

	ArrayList<Integer> q3=new ArrayList<Integer>();
	q3.add(4); /// Populate the arraylist
	q3.add(6);
	q3.add(10);
	q3.set(1,((q3.get(1)+1))); ///adds 1 to the current location

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It is basically calling to set q3 at location 1 with the former q3 value +1.  IN this case 6+1=7;