What is a .RU file?
The .RU file extension is a special type of file used by Java programs, specifically for handling Russian fonts. These files are called Java Russian Font Properties Files. They help Java applications know which fonts to use when displaying text in Russian. Instead of using the standard fonts that are usually for English or other Latin-based languages, these .RU files tell the Java program to use specific fonts that have the Russian characters or glyphs.
To open or work with these .RU files, you can use the Oracle Java Runtime Environment, which is a program that lets Java applications run on your computer. You can also open these files with any basic text editor, like Notepad on Windows or TextEdit on Mac, because the files are essentially text files that contain settings.
The files are named something like font.properties.ru and are a type of .PROPERTIES file used by Java. When a Java application starts, the Java Virtual Machine (or JVM) reads these files to know which fonts to display. The information in the .RU files is accessed by the Java program through a specific part of Java called the java.util.Properties API.
It's important not to mix up the .RU file extension with the ".ru" used at the end of Russian website addresses. They are completely different; the .RU file extension is for font settings in Java applications, while ".ru" is just used for websites from Russia.
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