Running J2Demo.jar in Xcode Instruments leak profile shows ~37.5KiB memory leak in Java_sun_font_CFont_getCascadeList in these frames:

 Malloc 7.50 KiB 1 0x7fde7d938200 7.50 KiB libawt_lwawt.dylib Java_sun_font_CFont_getCascadeList

   0 libsystem_malloc.dylib malloc_zone_malloc
   1 libsystem_malloc.dylib malloc
   2 CoreFoundation -[__NSArrayM insertObject:atIndex:]
   3 CoreFoundation __CFLocaleCopyCStringsAsArray
   4 libawt_lwawt.dylib Java_sun_font_CFont_getCascadeList /Volumes/Work/review/2403/jdk/src/java.desktop/macosx/native/libawt_lwawt/font/AWTFont.m:557
   5 0x11ab08d48

and

 NSArray 1 0x7fddfd4f7530 336 Bytes libawt_lwawt.dylib Java_sun_font_CFont_getCascadeList

   0 libsystem_malloc.dylib malloc_zone_calloc
   1 libsystem_malloc.dylib calloc
   2 libobjc.A.dylib class_createInstance
   3 CoreFoundation __CFAllocateObject
   4 CoreFoundation __NSArrayI_new
   5 CoreFoundation -[NSArray initWithArray:range:copyItems:]
   6 CoreText CTFontCopyDefaultCascadeListForLanguages
   7 libawt_lwawt.dylib Java_sun_font_CFont_getCascadeList /Volumes/Work/review/2403/jdk/src/java.desktop/macosx/native/libawt_lwawt/font/AWTFont.m:562
   8 0x11ab08d48