What is a font configuration file?
The font configuration files are used in Sun’s Java 2 Runtime Environments to map logical font names to physical fonts. There are several files to support different mappings depending on the host operating system version. The files are located in the lib directory within the J2RE installation. Note that font configuration files are implementation dependent. Not all implementations of the Java 2 platform use them, and the format and content vary between different runtime environments as well as between releases.