Re: Weird window close behavior

Lew wrote:
Lew wrote:
<sscce file="testit/HelloWorldFrame.java" >
package testit;

import java.awt.Dimension;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.SwingUtilities;

/** Investigate whether frame closes after mouse passes over the frame.
*/
public class HelloWorldFrame implements Runnable
{
private JFrame frame = new JFrame();

@Override
public void run()
{
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(new JLabel("hi"));

Dimension dim = new Dimension( 100, 100 );
frame.setPreferredSize( dim );

frame.pack();
frame.setVisible(true);
}

/** main.
* @param args the command line arguments
*/
public static void main( String[] args )
{
SwingUtilities.invokeLater( new HelloWorldFrame() );
}
}
</sscce>

Knute Johnson wrote:
I'm curious, you have no constructor here. Why would you do that? I've never seen anyone do this to create a basic Swing GUI before.

Not true, there is a constructor. Every object has a constructor.

The whole point of the SSCCE was to show how one can avoid putting anything other than construction in a constructor. I even said,

Here's my recast to avoid doing anything besides construction in the constructor:

in order to explain why I was doing what I did.

Why wouldn't I do it that way? Haven't you read that it's a best practice to limit constructors to construction?

Y'know, people always complain that Java is verbose, but the minute you get elegant with your code, ...


I didn't say it was elegant, it is. I've just never seen anything like it that's all.

So why wouldn't you construct a GUI in a GUI's constructor?

--

Knute Johnson
email s/nospam/knute2008/

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