You should round percentages to the nearest integer. You can use the Math.round method to do so, but you will have to cast the result to an int, as in:

int percent = (int) Math.round(percentage);

One of the things to keep in mind for this program is that you are transforming data from one form to another.

You start with a String that has 70 characters in it.
You convert that into two sets of counters (how many A answers for each dimension, how many B answers for each dimension).
You convert that into a set of percentages.
And you finally convert that into a String that represents the personality type.

If you work through this step by step, the problem will be easier to solve. The following diagram summarizes the different transformations:

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