To Create an object at runtime

[Huiyuanm]

IF I put the declaration of some components into the method of 'actionPerformed',for
example,
JTextArea ErrorMsg=new JTextArea(4,10);

Why it doesn't work?

Thank you!

[Paul Clapham]

This makes ErrorMsg a local variable for that method. You can't refer to it
outside the method, and as soon as the method finishes its local variables
are candidates for garbage collection.

Don't know what you mean by "it doesn't work". Local variables work.
You'll get a compiler error if you try to reference them outside of their
scope. Hope this helps, your question isn't very clear or specific.

Huiyuanm <huiyuanm@uwyo.edu> wrote in message
news:38d3b1ae$1@news.devx.com...
>
> IF I put the declaration of some components into the method of
'actionPerformed',for
> example,
> JTextArea ErrorMsg=new JTextArea(4,10);
>
> Why it doesn't work?
>
> Thank you!