Re: Throw an exception from actionPerformed() method.

From:

Nigel Wade <nmw@ion.le.ac.uk>

Newsgroups:

comp.lang.java.programmer

Date:

Wed, 04 Oct 2006 09:54:17 +0100

Message-ID:

<efvsrq$l3s$1@south.jnrs.ja.net>

Asanka wrote:

Hi All,

I am developing a Java application with Swing and Oracle. On the way I
want to throw an exception from the actionPerformed() method of an
ActionListener.

But I can't do that because it doesn't implement it in the
ActionListener interfacre. Is there any way to do that.

Say doPopulate populates a table and essentially it wants to throw or
catch SQLException. So I can't call it like this way.

ActionListener act = new ActionListener(){
    public void actionPerformed(ActionEvent ae){
          doPopulate();
     }
};

But I want to throw it some way without catching..

Could you please advice me how to throw that exception (without
catching)..

You can't. You have to catch it and handle it.

What do you think the EDT would do with the exception if you actually managed to
get the ActionListener to throw it? How do you think your GUI would behave from
then on?

--
Nigel Wade, System Administrator, Space Plasma Physics Group,
University of Leicester, Leicester, LE1 7RH, UK
E-mail : nmw@ion.le.ac.uk
Phone : +44 (0)116 2523548, Fax : +44 (0)116 2523555