I'm running KDE/Fedora as my main machine, and Netbean fonts made my eyes bleed. This precipitated a flurry of searches as to how to fix the problem -- my desktop fonts are pretty, but the Netbean ones are awful.
Rather quickly you'll find that there are two tracks, one is to change the config/command line parameter to launch it (I believe it's: -J-Dswing.aatext=true), the other is to use the official Oracle JVM/JDK, and version 6, along with ensure Netbeans is launching with that (see JAVA_HOME). It has better font rendering/handling. I've done the former, but haven't bothered with the latter, as I prefer Fedora managing my packages.
Rather quickly you'll find that there are two tracks, one is to change the config/command line parameter to launch it (I believe it's: -J-Dswing.aatext=true), the other is to use the official Oracle JVM/JDK, and version 6, along with ensure Netbeans is launching with that (see JAVA_HOME). It has better font rendering/handling. I've done the former, but haven't bothered with the latter, as I prefer Fedora managing my packages.
I hope that helps.