Java swing default look and feel

When I run a java swing application, the metal look and feel is detected as the default one. My swing.properties file looks like this:

Code:

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me@pc:~$ cat /etc/java-7-openjdk/swing.properties
# uncomment to set the default look and feel to GTK
swing.defaultlaf=com.sun.java.swing.plaf.gtk.GTKLookAndFeel

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Back at the time I used Gnome2 in Ubuntu 10.10, it just worked. Now since I upgraded to Xubuntu 12.04 it doesn't work anymore.
I really want to change it, because I think the metal look and feel is really ugly.

Probably a dumb question, but what version of java are you running? Are you using the java that's in that location?

On my laptop I only have openjdk 7 installed. On my pc I have both 6 and 7 installed (because one program depends on 6), but 7 is the default.

I'm seeing the same - I have both OpenJDK 6 and 7. Starting apps under 6 looks much nicer than 7, mostly because Java 7 has nasty looking bold fonts.

Comparing the default system properties of Java 6 and Java 7, the only related difference seems to be that Java 7 has

Code:

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awt.toolkit = sun.awt.X11.XToolkit

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Changing this value just breaks things as I can't seem to use any of the other available toolkits.

Comparing /etc/java-6 and /etc/java-7 reveals nothing useful, in particular, swing.properties files are identical (and nothing but comments).

Changing the look and feel :

Motif : hideous and cyan

Windows : absent

GTK is the same as the System look and feel and is apparently just much uglier in Java 7 than it is in Java 6.

Metal : nicer fonts but hideous chrome.

Nimbus : dies with a NullPointerException (running JConsole)

Examining the source ; nothing obvious in "com.sun.java.swing.plaf.gtk" that would cause the GTK look and feel to have those nasty bold fonts.

So I'm stumped. Bah.