Problem with while loops, please help!

Question

I am having quite a bit of trouble with a program im working on. What i am doing is reading files from a directory in a for loop, in this loop the files are being broken into words and entered into a while loop where they are counted, the problem is i need to count the words in each file seperately and store each count in an array list or something similar. I also want to store the words in each file onto a seperate list
for(...)
read in files...
     //Go through each line of the first file
          while(matchLine1.find()) {
               CharSequence line1 = matchLine1.group();
               //Get the words in the line
               String words1[] = wordBreak.split(line1);
               for (int i1 = 0, n = words1.length; i1 < n; i1++) {
                    if(words1[i1].length() > 0) {
                         int count= 0;
                                       count++;
                         list1.add(words1[i1]);
          }This is what i have been doing, but with this method count stores the number of words in all files combined, not each individual file, and similarly list1 stores the words in all the files not in each individual file. Does anybody know how i could change this or what datastructures i could use that would allow me to store each file seperately. I would appreciate any help on this topic, Thanks!

Answer 1

Don't try to construct complicated nested loops, it makes things a
tangled mess. You want a collection of words per file. You have at least
zero files. Given a file (or its name), you want to add a word to a collection
associated with that file, right?
A Map is perfect for this, i.e. the file's name can be the key and the
associated value can be the collection of words. A separate simple class
can be a 'MapManager' (ahem) that controls the access to this master
map. This MapManager doesn't know anything about what type of
collection is supposed to store all those words. Maybe you want to
store just the unique words, maybe you want to store them all, including
the duplicates etc. etc. The MapManager depends on a CollectionBuilder,
i.e. a simple thing that is able to deliver a new collection to be associated
with a file name. Here's the CollectionBuilder:public interface CollectionBuilder {
   Collection getCollection();
}Because I'm feeling lazy today, I won't design an interface for a MapManager,
so I simply make it a class; here it is:public class MapManager {
   private Map map= new HashMap(); // file/words association
   CollectionBuilder cb; // delivers Collections per file
   // constructor
   public MapManager(CollectionBuilder cb) { this.cb= cb; }
   // add a word 'word' given a filename 'name'
   public boolean addWord(String name, String word) {
      Collection c= map.get(name);
      if (c == null) { // nothing found for this file
         c= cb.getCollection(); // get a new collection
         map.put(name, c); // and associate it with the filename
      return c.add(word); // return whatever the collection returns
   // get the collection associated with a filename
   public Collection getCollection(String name) { return map.get(name); }
}... now simply keep adding words from a file to this MapManager and
retrieve the collections afterwards.
kind regards,
Jos