JDialog (or any window) sizing

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Bill Michaelson - 21 Dec 2005 20:19 GMT

I would like my JDialog to pop up with a size that is just adequate to
contain what is within, which includes various components and layouts in
the hierarchy. I'm hoping someone can tell me in a nutshell what
sequence of operations to perform.

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Vova Reznik - 21 Dec 2005 20:22 GMT

> I would like my JDialog to pop up with a size that is just adequate to
> contain what is within, which includes various components and layouts in
> the hierarchy. I'm hoping someone can tell me in a nutshell what
> sequence of operations to perform.

java.awt.Window::pack()
and Window subs

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Bill Michaelson - 21 Dec 2005 20:40 GMT

Thank you so much for the instant response. It works fine for two of
three cases. The third case still leaves me with a question. The
containment hierarchy in question has a JTable in a JScrollPane. I'd
like to set that portion of the composition to a particular size and
allow the containing JDialog and other elements to be sized around it
automatically. If I simply call pack(), the JTable area is much too large.

Your recommendation, please?

>> I would like my JDialog to pop up with a size that is just adequate to
>> contain what is within, which includes various components and layouts
[quoted text clipped - 3 lines]
> java.awt.Window::pack()
> and Window subs

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Vova Reznik - 21 Dec 2005 20:48 GMT

Preferred size of JScrollPane with JTable inside is:

Component c = new JScrollPane(new JTable());
System.out.println(c.getClass().getName()+ ": " +c.getPreferredSize());
javax.swing.JScrollPane: java.awt.Dimension[width=453,height=403]

You may change JScrollPane preferred size before calling pack()

> Thank you so much for the instant response. It works fine for two of
> three cases. The third case still leaves me with a question. The
[quoted text clipped - 12 lines]
>> java.awt.Window::pack()
>> and Window subs

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Bill Michaelson - 21 Dec 2005 22:48 GMT

Much to my embarrassment, I tried setPreferredSize(int,int) on the
JScrollPane and assumed that the method did not exist for the class when
the compile failed. I didn't think of using a Dimension object until I
read your post. I have it working reasonably well now.

Thanks again for helping. I know this is basic stuff, but it gets
pretty frustrating sometimes.

> Preferred size of JScrollPane with JTable inside is:
>
[quoted text clipped - 21 lines]
>>> java.awt.Window::pack()
>>> and Window subs

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Andrew Thompson - 22 Dec 2005 01:38 GMT

> Much to my embarrassment, I tried setPreferredSize(int,int) on the
> JScrollPane and assumed that the method did not exist for the class when
> the compile failed.

The JavaDocs (or an automplete IDE) are much handy here..
<http://java.sun.com/j2se/1.5.0/docs/api/javax/swing/JScrollPane.html>

Do a search on 'setpref', and click the link.

'Voila' - setPreferredSize inherets from JComponent and
accepts a Dimension.

Signature

Andrew Thompson
physci, javasaver, 1point1c, lensescapes - athompson.info/andrew

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Roedy Green - 22 Dec 2005 08:43 GMT

>Much to my embarrassment, I tried setPreferredSize(int,int) on the
>JScrollPane and assumed that the method did not exist for the class when
>the compile failed.

setPreferredSize came in with JDK 1.5. Prior to that you must
override getPreferredSize (and brothers).

Signature

Canadian Mind Products, Roedy Green.
http://mindprod.com Java custom programming, consulting and coaching.

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Bill Michaelson - 23 Dec 2005 14:47 GMT

>>Much to my embarrassment, I tried setPreferredSize(int,int) on the
>>JScrollPane and assumed that the method did not exist for the class when
>>the compile failed.
>
> setPreferredSize came in with JDK 1.5. Prior to that you must
> override getPreferredSize (and brothers).

I haven't been thinking in those terms, but I'm catching on as I scrape
the rust off my Java lobe. Thanks for the clue...

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JDialog (or any window) sizing

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