Performing a search

public class LuceneTest {
    public static void main(String[] args) throws IOException, ParseException {
        Analyzer analyzer = new StandardAnalyzer();
        Directory directory = new RAMDirectory();
        IndexWriterConfig config = new IndexWriterConfig(Version.LATEST, analyzer);
        IndexWriter indexWriter = new IndexWriter(directory, config);
        Document doc = new Document();
        String text = "Lucene is an Information Retrieval library written in Java";
        doc.add(new TextField("Content", text, Field.Store.YES));
        indexWriter.addDocument(doc);
        indexWriter.close();
        IndexReader indexReader = DirectoryReader.open(directory);
        IndexSearcher indexSearcher = new IndexSearcher(indexReader);
        QueryParser parser = new QueryParser( "Content", analyzer);
        Query query = parser.parse("Lucene");
        int hitsPerPage = 10;
        TopDocs docs = indexSearcher.search(query, hitsPerPage);
        ScoreDoc[] hits = docs.scoreDocs;
        int end = Math.min(docs.totalHits, hitsPerPage);
        System.out.print("Total Hits: " + docs.totalHits);
        System.out.print("Results: ");
        for (int i = 0; i < end; i++) {
            Document d = indexSearcher.doc(hits[i].doc);
            System.out.println("Content: " + d.get("Content");
        }
    }
}