Java / Swing字体调整大小在跨平台上不起作用

Question

I have a swing application with this code, which attempts to resize the font of a component:

Font f = new Font(Font.SERIF,Font.PLAIN,16);
component.setFont(f);

The program loads with 14 point font, and I include a component which lets the user resize the component to 16 point font as above. When I run this on the computer I compiled it on (Debian), it works as intended, but I tested it on a Mac and a Windows computer and the font resizing feature doesn't work at all. However, on all platforms the font is serif. Any ideas why this is happening?

Answer 1

The component's default UI delegate on your platform may be pre-empting your setting. In the alternative, consider one of the following:

• Use deriveFont() on the existing font, illustrated here .

   component.getFont().deriveFont(16f) 

• Use an available sizeVariant , illustrated here .

• Use a custom UI delegate, illustrated here and here .