java – Bubble sorting algorithm, insertion and selection with CSV file

I have to perform 3 actions on a CSV file, but by ordering the algorithms method, it should work in JAVA – NETBEANS

The first is by bubble, where we must determine which city has the smallest number of registrants.

The second is by insertion, where it is necessary to determine the degree to which a larger quantity has been inscribed.

The third is by means of the sorting algorithm by selection, but I can explain it already in detail.

The CSV file to use, I downloaded it to a reader, who wants to help me tell me to share the information.

Thank you and blessings!