Java Process consumes my CPU - Why??

Question

I'm confused. I have an application where you click a button and a thread is created which loads a web page and extracts some information from it. I've posted the code below. However, after I click my button, my system practically locks up while this job is running. Anyone have any ideas why? I'm running on a PC with WindowsXP. No matter what this thing is doing, and since there is no disk access, shouldn't windows do it's thing and give the proper cpu time slice and not bog my system?? What gives??
Thanks
     public boolean update() {
          Object[] stationNames = JGToolConfig.getStations();
          ArrayList itemData = hts.getPage("http://jossh.com/database/inventory/inventory.txt");
          Object[] array = itemData.toArray();
          for(int i=1; i< array.length; i++) {
               StringTokenizer tokenizer = new StringTokenizer((String)array, ",");
               String[] tokens = new String[5];
               for(int j=0; tokenizer.hasMoreTokens() && j<5; j++) {
                    String str = tokenizer.nextToken();
                    int x = str.lastIndexOf("\n");
                    if(x>0) str = str.substring(0,x);
                    tokens[j] = str;
               updateStation(tokens[0], tokens);     
          return true;          

Answer 1

Thanks all, but please don't reply. I found the problem. I won't go into details, but as usual, the problem was some left-over code I thought I removed that was reading a file from disk a few hundred times. :-)