The font can be installed like any other font with the Control Panel.
To "install" the font in Java:
If you have a JRE (Java Runtime Environment, installed in $jre$), the copy .ttf file to $jre$/lib/fonts. Restart the Java application (the Java virtual machine). Now the font con be used.
if you habe a JDK (Java Development Kit, installed in $jdk$) you'll find the JRE in $jre$=$jdk$/jre