请问jre是如何找到系统的字体的？

Question

我现在的操作系统是ubuntu9.10 amd64
用的是java-6-openjdk
为什么我修改了fontconfig.properties后，仍然能够找到我的系统中全部字体？
以下是我的fontconfig.properties文件
[quote]version=1
serif.plain.latin-1=DejaVu Serif
serif.bold.latin-1=DejaVu Serif Bold
serif.italic.latin-1=DejaVu Serif Oblique
serif.bolditalic.latin-1=DejaVu Serif Bold Oblique
sansserif.plain.latin-1=DejaVu Sans
sansserif.bold.latin-1=DejaVu Sans Bold
sansserif.italic.latin-1=DejaVu Sans Oblique
sansserif.bolditalic.latin-1=DejaVu Sans Bold Oblique
monospaced.plain.latin-1=DejaVu Sans Mono
monospaced.bold.latin-1=DejaVu Sans Mono Bold
monospaced.italic.latin-1=DejaVu Sans Mono Oblique
monospaced.bolditalic.latin-1=DejaVu Sans Mono Bold Oblique
dialog.plain.latin-1=DejaVu Sans
dialog.bold.latin-1=DejaVu Sans Bold
dialog.italic.latin-1=DejaVu Sans Oblique
dialog.bolditalic.latin-1=DejaVu Sans Bold Oblique
dialoginput.plain.latin-1=DejaVu Sans Mono
dialoginput.bold.latin-1=DejaVu Sans Mono Bold
dialoginput.italic.latin-1=DejaVu Sans Mono Oblique
dialoginput.bolditalic.latin-1=DejaVu Sans Mono Bold Oblique
#dialoginput.bolditalic.latin-1.motif=LuxiMono-BoldOblique
#ese-kochi=Kochi Gothic
#ese-sazanami=Sazanami Gothic
#ese-vlgothic=VL Gothic
#-baekmuk=Baekmuk Gulim
#-baekmuk.motif=Baekmuk Gulim
#-un=UnDotum Bold
#-un.motif=UnDotum Bold

Search Sequences

sequence.allfonts=latin-1

Font File Names

filename.DejaVu_Sans=/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans.ttf
filename.DejaVu_Sans_Bold=/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans-Bold.ttf
filename.DejaVu_Sans_Oblique=/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans-Oblique.ttf
filename.DejaVu_Sans_Bold_Oblique=/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans-BoldOblique.ttf

filename.DejaVu_Sans_Mono=/usr/share/fonts/truetype/ttf-dejavu/DejaVuSansMono.ttf
filename.DejaVu_Sans_Mono_Bold=/usr/share/fonts/truetype/ttf-dejavu/DejaVuSansMono-Bold.ttf
filename.DejaVu_Sans_Mono_Oblique=/usr/share/fonts/truetype/ttf-dejavu/DejaVuSansMono-Oblique.ttf
filename.DejaVu_Sans_Mono_Bold_Oblique=/usr/share/fonts/truetype/ttf-dejavu/DejaVuSansMono-BoldOblique.ttf

filename.DejaVu_Serif=/usr/share/fonts/truetype/ttf-dejavu/DejaVuSerif.ttf
filename.DejaVu_Serif_Bold=/usr/share/fonts/truetype/ttf-dejavu/DejaVuSerif-Bold.ttf
filename.DejaVu_Serif_Oblique=/usr/share/fonts/truetype/ttf-dejavu/DejaVuSerif-Oblique.ttf
filename.DejaVu_Serif_Bold_Oblique=/usr/share/fonts/truetype/ttf-dejavu/DejaVuSerif-BoldOblique.ttf

[/quote]
难道修改这个文件是无效的吗？

Answer 1

GraphicsEnvironment environment=GraphicsEnvironment.getLocalGraphicsEnvironment();
String[] environment.getAvailableFontFamilyNames();得到是一个字体名字列表