Re: How to drop this exception?

From:

"Oliver Wong" <owong@castortech.com>

Newsgroups:

comp.lang.java.help

Date:

Mon, 25 Sep 2006 15:18:30 GMT

Message-ID:

<arSRg.32826$bf5.11259@edtnps90>

"Ikke" <ikke@hier.be> wrote in message
news:Xns9848DA26FC745ikkehierbe@195.130.132.70...

Hi everybody,

Here is some code I've been working on...

--- code ---
String connect = "jdbc:mysql://code/db?user=me&password=none";
Driver driver = new com.mysql.jdbc.Driver();
dbc = new DatabaseConnection();
dbc.openConnection(driver, connect);
--- /code ---

Those last two lines are needed to use a custom class from some package I
received. The openConnection method expects, as you can see, a driver and
a
connectionstring.

No problems for that last part - but in order to create a new Driver
object, I need to catch the SQLException which can be thrown by the Driver
constructor.

The reason to use the package in the first place was because it hides all
that and simply returns a boolean (connected / not).

Is it possible to:
a) construct a new Driver object without having to catch the SQLException
(probably not, and not a very good idea imho)

You'd have to modify the code for Driver to do that. If I understood
correctly, Driver is part of a 3rd party library, so you can't modify the
code for Driver.

b) pass in a Driver object, and let the method handle the exceptions

To actually pass in the object, you'd have to construct the object, in
which case you'd have to call the constructor, putting you right back at
square one.

c) pass in the name of a class which needs to be instantiated (best option
I guess)

    Possible, but this uses reflection, and generally it's better to use a
non-reflective solution in preference to a reflective one.

    Is there a special reason you can't just catch (or throw) the exception?

    - Oliver