public class ActionSearchBean extends
GenericSearchBean<ActionDTO, Long,
ActionDTO> {

@Override
public String search() {
data.setRowCount(null);

if(data.getRowCount()==0){
data.getNoRecordFound().setRendered(true);
data.getDataScroller().setRendered(false);
}

return "searchAction";
}

@Override
public String clear() {
data.setRowCount(null);

if (data.getRowCount() > 0){
data.getNoRecordFound().setRendered(false);
data.getDataScroller().setRendered(true);
}else{
data.getNoRecordFound().setRendered(true);
data.getDataScroller().setRendered(false);
}

data.setModel(new ActionDTO());
data.setRowCount(null);

return "searchAction";
}

}

what is the purpose of @Override ...what will do @Override
here ?