// results:  SearchResults from a previous search
// whichDoc:  integer from 0 to results.getCount()-1 identifying the document to display

// Select the item to display
results.getNthDoc(whichDoc);
String f = results.getDocName();

com.dtsearch.engine.FileConverter fc = new com.dtsearch.engine.FileConverter();

// Set up FileConverter to use the selected item from search results
fc.setInputItem(results, index);

// If the file is HTML, this ensures that it has a BASE tag preserving relative links
fc.setBaseHref(f);

// Generate HTML output in a string
fc.setOutputToString(true);
fc.setOutputFormat(Constants.it_HTML);

// Highlight hits by making them bold
fc.setBeforeHit("<b>");
fc.setAfterHit("</b>");

// Perform the conversion
fc.execute();

// Display the result
setHtml(fc.getOutputString());