Mine

import org.apache.lucene.document.Document;
import java.io.*;
class FullTextUpdater
{
    File _fullTextFile = null;
    File _indexDir = null;
    FullTextUpdater(String indexDir,String fullTextFile)
    {
        _indexDir = new File(indexDir);
        _fullTextFile = new File(fullTextFile);
    }
    private Document deleteDocument(String pmid)
    {
        return null;
    }
    private boolean addDocument(Document doc)
    {
        return true;
    }
    private Document updateFullTextField(Document doc)
    {
        return doc;
    }
    private boolean updateDocument(String pmid)
    {
        Document doc = new Document();
        doc = deleteDocument(pmid);
        return true;
    }
    public int updateAllDocuments()
    {
        int updatedCount=0;
        try
        {
            FileInputStream fstream= new FileInputStream(_fullTextFile);
            BufferedReader in = new BufferedReader(new InputStreamReader(fstream));
            while(in.ready())
            {
                System.out.println(in.readLine());
            }
        }
        catch (Exception e_io)
        {
            e_io.printStackTrace(); 
        }
        return updatedCount;
    }
    public static void main()
    {
        FullTextUpdater ftu = new FullTextUpdater("/data/helltolucene/index/","data/helltolucene/fulltext_list.txt");

    }
}