"digesting" protein strings - need vector help!

Question

Alright, here's my problem. I've got a GUI up and running to accept a long protein string, which will look like this (no breaks):
G D V E K G K K I F V Q K C A Q C H T V E K G G K H K T G P N L H G L F G R K T G Q A P G F S Y T D A N K N K G I T W G E E T L M E Y L E N P K K Y I P G T K M I F A G I K K K G E R E D L I A Y L K K A T N E
The gui offers a number of different proteases which are just things that cut the protein in certain places.
For example, the protease Trypsin will cut the string after every K.
What I need to do is write a method to cut the string after every K, save that sring to a vector, and continue with the remainder of the original protein string until there's no letters left.
My problem is that I really don't know how to use vectors, and I don't know what this method should look like! Can anyone help? Thanks!

Answer 1

if you want to keep the 'K' you will want to do this
import java.util.*;
public class Prot {
  public static void main(String[] args) {
    String str = "G D V E K G K K I F V Q K C A Q C H T V E K G G K H K T G P N L H G L F G R K T G Q A P G F S Y T D A N K N K G I T W G E E T L M E Y L E N P K K Y I P G T K M I F A G I K K K G E R E D L I A Y L K K A T N E";
    StringTokenizer stoken = new StringTokenizer (str, "K");
    List prots = new ArrayList();
    while (stoken.hasMoreTokens()) {
      String thisProt = stoken.nextToken();
      if (stoken.hasMoreTokens()) thisProt += "K";
      prots.add (thisProt);
      System.out.println("str = " + thisProt);
// iterate the list
    Iterator it = prots.iterator();
    while (it.hasNext()){
      String dd = (String) it.next();
      System.out.println(dd);