Snippet to create a file from the contents of a blob in Java

I have some files stored in a database blob column in Oracle 9.

I would like to have those files stored in the file system.

This should be pretty easy, but I don't find the right snipped.

How can I do this in java?

 PreparedStatement ptmst = ...
 ResutlSet rs = pstmt.executeQuery();
 rs.getBlob();
 // mistery 
 FileOutputStream out = new FileOutputStream();
 out.write(); // etc et c

I know it should be something like that... what I don't know is what is commented as mistery

Thanks

EDIT

I finally got this derived from David's question.

This is my lazy implementation:

PreparedStatement pstmt = connection.prepareStatement("select BINARY from MYTABLE");
ResultSet rs = pstmt.executeQuery();
while( rs.next() ) {
    Blob blob = rs.getBlob("BINARY");
    System.out.println("Read "+ blob.length() + " bytes ");
    byte [] array = blob.getBytes( 1, ( int ) blob.length() );
    File file = File.createTempFile("something-", ".binary", new File("."));
    FileOutputStream out = new FileOutputStream( file );
    out.write( array );
    out.close();
}