I've been developing Rails applications for a while, and I've been using Netbeans, recommended by a friend, as my primary development tool. It has great functionality, but the one thing that bothers me is that I can't set a good font. Since Netbeans is based on Swing, font rendering must be done through Java. By default, the monospaced font is mapped to SimSun (Songti), and if you choose another font, Chinese characters won't display properly. So, how do we solve this issue? You can follow these steps: