Need of exception handler in calling function, isn't that weird???

Question

Hi,
I have written a function as follows
public String fetchName(String query) throws Exception
          stmt = con.createStatement();
          ResultSet rs = stmt.executeQuery(query);
          rs.next();
          return (rs.getString(1));
I've handled the for exceptions here using "throws Exception". Inspite of that when i call it from other function and in that funtion no exception need to be handled, compiler gives errror.
Following is the calling funtion
public String checksubAction(String action)
          String retValue=" ";
String query="";
          query = "select Title from dbo.Folder where Folder_Id="+folderId;
          retValue = dataBaseObj.fetchName(query);                                        
but when i write it in try-catch block, no errror is given.
Why is it that inspite of handling exception(s) in the called function, we need to handle them in calling functions.

Answer 1

No you have not handled the exception. Your code say "fetchName" does NOT handle exceptions of type "Exception", the calling method should be aware of this, and handle that type of exception.
The Java Tutorial: Essential Java Classes: Handling Errors Using Exceptions
(Please when declaring a method can throw exceptions, be specific, i.e. throw SQLException in this case)