LUCENE第一个小程序（有错）

//照着课本抄的都有错  为什么？、?/？？？？？？？？？？？

import java.io.File;
import java.io.FileReader;
import java.io.IOException;

import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.CorruptIndexException;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;
import org.apache.lucene.store.IndexInput;
import org.apache.lucene.store.IndexOutput;
import org.apache.lucene.store.LockObtainFailedException;
import org.apache.lucene.store.RAMDirectory;
import org.apache.lucene.util.Version;

public class HelloLucene {

 /**
  * @param args
  */
 
 
 public static void index()throws IOException
 {
//  Directory directory=new RAMDirectory() ;
  Directory directory=FSDirectory.open(new File("g:/lucene/first1") );
  IndexWriterConfig iwc=new IndexWriterConfig(Version.LUCENE_35, new StandardAnalyzer(Version.LUCENE_35));
  IndexWriter writer=null;
  try
  {writer=new  IndexWriter(directory,iwc);
  Document doc=null;
  File f=new File("g:/lucene");
   for (File file:f.listFiles())
   {
    doc=new Document();
    doc.add(new Field("contend",new FileReader(file)));
    doc.add(new Field("filename",file.getName(),Field.Store.YES,Field.Index.NOT_ANALYZED));
    doc.add(new Field("filepath",file.getAbsolutePath(), Field.Store.YES, Field.Index.NOT_ANALYZED));
    writer.addDocument(doc);
    
    
   }
  }
  catch (CorruptIndexException e)
  {
   e.printStackTrace();
  }
  catch (LockObtainFailedException e)
  {
   e.printStackTrace();
  }
  catch (IOException e)
  {
   e.printStackTrace();
  }
  finally
  {
   if (writer!=null)
   
    writer.close();
  }
 }
  
 
 public static void main(String[] args) {
  // TODO Auto-generated method stub

  try {
   index();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  
 }

}