Examples: removeItem method

import lotus.domino.*;
import java.util.Vector;
public class JavaAgent extends AgentBase {
  public void NotesMain() {
    try {
      Session session = getSession();
      AgentContext agentContext = session.getAgentContext();
      // (Your code goes here) 
      Database db = agentContext.getCurrentDatabase();
      DocumentCollection dc = db.getAllDocuments();
      Document doc = dc.getFirstDocument();
      while (doc != null) {
        if (doc.hasItem("OldName")) {
          doc.replaceItemValue("NewItem", 
                  doc.getItemValue("OldItem"));
          doc.removeItem("OldItem");
          doc.save();
          }
        doc = dc.getNextDocument(doc);
        }
    } catch(Exception e) {
      e.printStackTrace();
    }
  }
}