today's working
sudo apt-get remove openjdk*
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java7-installer
sudo apt-get install oracle-java7-set-default
sudo su -c "chmod +x netbeans-8*php-linux.sh"
sudo su -c "./netbeans-8*php-linux.sh"
找到netbeans设置文件，一般是在/usr/local/netbeans-6.8/etc/netbeans.conf
sudo vim netbeans.conf
netbeans_default_options在尾部加上：-J-Dawt.useSystemAAFontSettings=on
