A DESCRIPTION OF THE REQUEST :
In the jre/lib/fontconfig.SuSE.properties.src, there isn't a description for Japanese font.
I can see it in the fontconfig.RedHat.properties.src and fontconfig.Sun.properties.src.

I think it's the cause of this problem.

Why don't you provide the i18n fontfonfig.SuSE.properties.src?

JUSTIFICATION :
Our software is not just only for Japanese, but for whole the world.
Yes, I know about the solution to create the jre/lib/fonts/fallback directory and put the Japanese fonts, but it is not an ultimate solution for I18N.