Solution to the problem that Linux system Java is not compatible with Siyuan boldface characters

It’s just that the Java program seems to be incompatible with Siyuan Hei fonts. So what is the solution to the problem that Linux system Java is not compatible with Siyuan Hei fonts?

Although Oracle's official documentation states that OTF fonts have been supported starting from Java 7, methods such as createFont can still use parameters such as TRUETYPE_FONT to provide support for OTF fonts. However, when Siyuan HeiTi displays Chinese characters in a Java program, squares will appear, especially in the Simplified Chinese language environment. The font seems to be using the SiYuan HeiTi Taiwan and Hong Kong traditional version, and the simplified Chinese version is not used. Some characters cannot be displayed and are replaced by squares.

In the absence of extra energy to study font issues, the current guess is that the Siyuan font is released in OTF format and there is a problem with Hinting information inside, causing problems with Java recognition. In addition, the language encoding of the font may also be a problem. As a temporary alternative, it is best to use TTF fonts without Hinting information, such as fonts produced by communities such as XHei and Minglan (without Hinting information). It is also recommended to delete the fontconfig configuration that comes with the installation of the Siyuan Blackbody software package, and then directly modify files such as 65-nonlatin.conf in fontconfig to customize the matching priority of the alternative fonts you use, etc.

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