I assume that the letters are the bidder names,
and that your input starts with a bidder name.
public class Test055 {
public static void main(String[] args) {
String input = "A,5,B,10,A,8,A,17,B,17,B,1";
String[] bidderName = new String[100];
int[] bidValue = new int[100];
String[] data = input.trim().split(",");
int k = 0;
for (int i = 0; i < data.length; i += 2) {
bidderName[i/2] = data[i];
bidValue[i/2] = Integer.parseInt(data[i + 1]);
k++;
}
for (int i = 0; i < k; i++) {
System.out.println(bidderName[i] + " // " + bidValue[i]);
}
}
}