Writing Contents Of TreeSet To File

I am still a student of Java, so forgive me for the elementary question.
Is it possible to write the contents of a TreeSet to a File?
I would also like to be able to save the TreeSet in binary form instead of having it disappear when the program is closed. I think I need Serializable for this task.
The program I am trying to develop is for storing film titles. They need to be retrieved at program start-up. So far I have been able to have the titles go directly into the TreeSet from a JTextField with the click of a JButton. But obviously they are only in temporary memory and need to be saved to disk.
Thanks for any help.

> Is it possible to write the contents of a TreeSet to
a File?
Sure, writing text to a file: http://javaalmanac.com/egs/java.io/WriteToFile.html
> I would also like to be able to save the TreeSet in
binary form instead of having it disappear when the
program is closed. I think I need Serializable for
this task.
Correct. Check out this link: http://javaalmanac.com/egs/java.io/SerializeObj.html
> The program I am trying to develop is for storing
film titles. They need to be retrieved at program
start-up. So far I have been able to have the titles
go directly into the TreeSet from a JTextField with
the click of a JButton. But obviously they are only
in temporary memory and need to be saved to disk.
Wouldn't you prefer a Map (key/value pair) over a Set? With a map you can store the fim title as a key and create your own Movie object which stores director, year, actors/actresses etc. as the value.
See: http://java.sun.com/j2se/1.5.0/docs/api/java/util/Map.html
Good luck.

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