FULL PRODUCT VERSION :
Java Version: Java 1.7.0_10-b18

ADDITIONAL OS VERSION INFORMATION :
Mac OS X 10.7

A DESCRIPTION OF THE PROBLEM :
When JOptionPane is created with the JOptionPane.YES_NO_CANCEL_OPTION option on Mac with a Japanese locale, the 'yes' and 'no' buttons are untranslated.

This seems to be the case in JVM 6 as well (did not test further back).

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
On a Mac with a Japanese locale (this seems to be reproducible on JVM 6 and 7), compile and run the attached example code.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
As on Windows, I expect the 'yes' and 'no' buttons to be translated - the 'cancel' button is translated.

 
ACTUAL -
 The 'yes' and 'no' buttons are untranslated to Japanese, but 'cancel' button is translated.


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JOptionPane;

public class TestMJOptionPane {
    public static void main(String[] args) {

        JFrame frame = new JFrame();
        JOptionPane pane =
                new JOptionPane( " First Argument " , JOptionPane.QUESTION_MESSAGE, JOptionPane.YES_NO_CANCEL_OPTION,
                        null,
                        null, null);

        pane.setComponentOrientation(frame.getComponentOrientation());

        JDialog dialog = pane.createDialog(frame, " title " );
        dialog.setVisible(true);
        dialog.dispose();
    }
}

---------- END SOURCE ----------