Re: instance of classes

From:
"Andrew Thompson" <u32984@uwe>
Newsgroups:
comp.lang.java.programmer
Date:
Fri, 13 Apr 2007 06:44:21 GMT
Message-ID:
<70a11609539ae@uwe>
dendeezen wrote:
..

Several days ago I asked the same question .


It might have made more sense to continue the
discussion on that thread, but since this post has
all relevant information (though the question was
cleverly hidden!) I will continue it here.

..Hereby now some code ..


Self contained examples, no less! :-)

..to explain what I mean.


'Let the code do the talking'? I am comfortable
with that.

Thanks for helping a newbie,


Note that a good group for those starting Java
is comp.lang.java.help, this group is better suited
to folks that have more complex problems.

But to your code.

When compiling, I got the error 'cannot find symbol
symbol : constructor basis()' that confused me for
a few moments, as I expected it to get a 'default
constructor' but a bit of googling later suggested to me
that the default constructor is *only* created when
there are *no* other constructors defined - and the
basis class already had one that took three arguments.

The 'simplest solution' is to explicitly add a 'no args.'
constructor, but note that is *probably* not the entire
solution. The compilable form of the basis class, is
as follows..

<snippet>
class basis extends JPanel{

    basis() {
    }

    basis(testinstance ti, beta be, geg ge) {
        GridLayout grid = new GridLayout(3,0);
        setLayout(grid);
        geg g = new geg(ti, be);
        beta b = new beta(ge);
        this.add(g);
        this.add(b);
    }
}
</snippet>

HTH

--
Andrew Thompson
http://www.athompson.info/andrew/

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