I recently reinstalled JDeveloper 11g production using the newly-released JDK 1.6.0_10 release and noticed that the IDE began using a font anti-aliasing to "smooth" the fonts. However, with my laptop's monitor and my set of eyeballs, this font smoothing actually made things seem a little blurry to me, so I wanted to post the following tip in case it might come in handy to others.
If you add the following lines into the jdev.conf file that lives in the JDEV_INSTALL_HOME/jdeveloper/jdev/bin directory, you can control the font anti-aliasing to be what looks best for your eyes. The changes will take effect the next time you start JDeveloper.
# Control the use of font anti-aliasing in JDK 1.6.0_10
# In JDK 1.6 there is a system property called
# awt.useSystemAAFontSettings you can use to control anti-aliasing.
# Possible values include:
# lcd - use ClearType style sub-pixel anti-aliasing.
# false - no anti-aliasing. Fast with jaggies.
# on - Gnome Best shapes/Best contrast. Not available in Windows.
# gasp - Windows standard anti-aliasing.