import lotus.domino.*;

public class JavaAgent extends AgentBase {

 public void NotesMain() {

   try {
     Session session = getSession();
     AgentContext agentContext = session.getAgentContext();

     // (Your code goes here)
     DocumentCollection dc = agentContext.getUnprocessedDocuments();
     Document doc = dc.getFirstDocument();
     RichTextItem body = (RichTextItem)doc.getFirstItem("Body");
     RichTextNavigator rtnav = body.createNavigator();
     if (rtnav.findFirstElement(RichTextItem.RTELEM_TYPE_DOCLINK)) {
       RichTextDoclink rtlink = (RichTextDoclink)rtnav.getElement();
       String hot = rtlink.getHotSpotText();
       if (hot.length() != 0) {
         rtlink.setHotSpotText("New hotspot text");
         RichTextStyle rts = rtlink.getHotSpotTextStyle();
         rts.setBold(RichTextStyle.YES);
         rtlink.setHotSpotTextStyle(rts);
         doc.save(true, true);
       }
       else
         System.out.println("No hotspot text");
     }
     else
       System.out.println("No doclinks in Body");

   } catch(Exception e) {
     e.printStackTrace();
   }
 }
}

See Also

setHotSpotTextStyle method

Glossary