Re: Where shoul I throw RuntimeException

Hi all!
I want to know, where can I use runtime exceptions?
For example, I have method like this:
public String getNameById(long id) {
 Connection connection = null;
 Statement st = null;
 try {
   connection = getConnection();
   st = connection.createStatement();
   ResultSet rs = st.executeQuery("SELECT NAME WHERE id=" + id);
   if (!rs.next()) {
     //--->Here, I can return null, throw RuntimeException, throw
catched exception<---
   }
   return rs.getString(1);
 } catch (SQLException e) {
   //--->Here, I can return null, throw RuntimeException, throw
catched exception<---
 } finally {
     closeConnectionAndStatement(st, connection);
 }
}

In this example, I can return null and describe this in javadoc for
method. But, when other developer use this method, he cann't get id
from somewhere, he must know that object with this id exist...
Ever, when I should make a choice, I cann't choose right answer :(
What do you think about this?