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If I can't obtain the name of a JFrame variable what can I do.

I created a form using NetBean's Design view. The JFrame doesn't appear to have a variable name associated with it. Can I obtain a variable name for it somehow.

If I copy the entire project to another file with the same name and delete the old file the project still runs. In the file, there is no explicit reference to a JFrame at all. But, the JFrame class is inherited in a number of places.

I need the name of the JFrame variable because I want to use it in a JDialog extended class using:

public class Test extends JDialog
{ ...
public Test(Frame parent)
{
super(parent, "Login", true);
....
}
....

The above "parent" was created using:

final JFrame frame = new JFrame("Testing");

I pass frame to Test:

Test tst = new Test(frame);

Thank you,

When I put the folowing code into "InitComponents ()", it tells me "frame0".

System.out.println ("Variable name " + this.toString());

On 8/27/2012 10:10 AM, wrote:
> If I can't obtain the name of a JFrame variable what can I do.

Invent one?

> I created a form using NetBean's Design view. The JFrame doesn't appear to have a variable name associated with it. Can I obtain a variable name for it somehow.

You created a *class* using NetBeans: Data fields, initializers,
methods -- and one or more constructors. When you want an instance
of that class, construct one with `new', just as you would with any
other class. And if you want to retain a reference to that instance,
store it in a variable with a name of your own choosing.

> If I copy the entire project to another file with the same name and delete the old file the project still runs. In the file, there is no explicit reference to a JFrame at all. But, the JFrame class is inherited in a number of places.

Sorry; I can't figure out what you mean by "copy the entire project"
or by "the project still runs." Also, while it makes sense that your
class might extend JFrame, I don't understand how it can do so "in a
number of places."

> I need the name of the JFrame variable because I want to use it in a JDialog extended class using:
>
> public class Test extends JDialog
> { ...
> public Test(Frame parent)
> {
> super(parent, "Login", true);
> ...
> }
> ...
>
> The above "parent" was created using:
>
> final JFrame frame = new JFrame("Testing");

Problem solved: `frame' is the name of the variable that
refers to your JFrame. (Yet I can't escape the feeling that
something's been garbled: This new instance is a plain vanilla
JFrame, not a class of your own or your own "form" or whatever.)

> I pass frame to Test:
>
> Test tst = new Test(frame);

Looks fine. What's the problem?

--
Eric Sosman
d

On Monday, August 27, 2012 7:23:58 AM UTC-7, (unknown) wrote:
> When I put the folowing code into "InitComponents ()", it tells me "frame0". System.out.println ("Variable name " + this.toString());

The first frame you create will have the name "frame0", the next one "frame1", etc. You need to give your instance a name if you want something other than "frameN":

this.setName( "myName" );