Matching Keys To Values

Question

When a user clicks on a button with a letter from A to Z, the letter is fed to a method that searches a HashMap for all the keys that start with that letter. The keys represent film titles. The titles are put into a TreeSet to keep them in alphabetical order. I then need to match the key to the corresponding value so as to extract the data from the value which is a JavaBean. The goal is to extract the info and place it into a JTable which you see in the screenshot. I know how to axtract the info, it is how to match the key to the value that stumps me. Any help would be greatly appreciated.
http://pollscanada.com/screenshot.html
    public void setFilmData(String letter) {
            try {
      FileInputStream file = new FileInputStream("FilmContainer.ser");
      ObjectInputStream obInputStream = new ObjectInputStream(file);
      container = (FilmContainer)obInputStream.readObject(); 
    } catch(Exception ex) {}
          TreeSet list = new TreeSet();
           Set set = container.keySet();
           Iterator it = set.iterator();
             while(it.hasNext()) {
              String key = (String)it.next();
               if(key.startsWith(letter)) { list.add(key); }
       //start matching titles to Beans and extract Bean info
    }

Answer 1

When a user clicks on a button with a letter from A
to Z, the letter is fed to a method that searches a
HashMap for all the keys that start with that letter.
The keys represent film titles. The titles are put
into a TreeSet to keep them in alphabetical order. I
then need to match the key to the corresponding value
so as to extract the data from the value which is a
JavaBean. The goal is to extract the info and place
it into a JTable which you see in the screenshot. I
know how to axtract the info, it is how to match the
key to the value that stumps me. Any help would be
greatly appreciated.
http://pollscanada.com/screenshot.html
public void setFilmData(String letter) {
try {
FileInputStream file = new
= new FileInputStream("FilmContainer.ser");
ObjectInputStream obInputStream = new
= new ObjectInputStream(file);
container =
iner = (FilmContainer)obInputStream.readObject(); 
} catch(Exception ex) {}
TreeSet list = new TreeSet();
Set set = container.keySet();
Iterator it = set.iterator();
while(it.hasNext()) {
String key = (String)it.next();
if(key.startsWith(letter)) {
With(letter)) { list.add(key); }
//start matching titles to Beans and extract
extract Bean info
It will be a better idea to use TreeMap which is a sorted map.
u store in the treemap with filmname as key and the bean
as value.
On press of a button u can get a subMap with the help of
subMap method using
    char letter = button.getText().charAt(0);
     Map  letterMap = filmMap.subMap(letter+"", letter+1+"");the letterMap would contains all the keys which start with that letter.