You can use word wrap in Netbeans.
Add the following to netbeans.conf (netbeans_installation_path/etc/netbeans.conf, by default /etc/netbeans.conf under linux):
-J-Dorg.netbeans.editor.linewrap=true
to the sixth line so it looks like this:
netbeans_default_options="-J-client -J-Xss2m -J-Xms32m -J-XX:PermSize=32m -J-XX:MaxPermSize=200m -J-Dapple.laf.useScreenMenuBar=true -J-Dapple.awt.graphics.UseQuartz=true -J-Dsun.java2d.noddraw=true -J-Dorg.netbeans.editor.linewrap=true"
and restart Netbeans.
Set the Line Wrap option in Tools->Options->Editor->Formating.
Works fine for me in Netbeans 6.9 and 7
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