JDK bundled demo demo/jfc/Notepad throws exception when executed under ja locale. The demo is localized into ja, sv, and zh_CN and only ja seems to have problem.

bash-3.2$ export LANG=ja_JP.UTF-8
bash-3.2$ export LC_ALL=$LANG
bash-3.2$ java -jar Notepad.jar
uncaught exception: java.lang.NullPointerException
java.lang.NullPointerException
        at javax.swing.ImageIcon.<init>(ImageIcon.java:187)
        at Notepad.createToolbarButton(Notepad.java:330)
        at Notepad.createTool(Notepad.java:316)
        at Notepad.createToolbar(Notepad.java:305)
        at Notepad.<init>(Notepad.java:120)
        at Notepad.main(Notepad.java:140)

Tested using promoted jdk7 b130.