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Re: Weird window close be

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  To: comp.lang.java.gui
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, ...

-- 
Lew

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Re: Weird window close be "Lew" <lew@THRWHITE.remove-dii-this> - 2011-04-27 15:46 +0000

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