FULL PRODUCT VERSION :
Java 1.7.0_25-b17

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows 7 Version 6.1 (Build 7601: Service Pack 1)

A DESCRIPTION OF THE PROBLEM :
In a Korea locale, Korean characters are displayed as empty boxes with Arial font.




STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Compile and run the attached code

There will be two labels showing the same string of example Korean characters.

One in monospaced font, the other in Arial. Note that the JLabel with Arial font is not rendered.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The characters should be rendered in a readable fashion.
ACTUAL -
The characters appear as boxes.

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import javax.swing.BorderFactory;
import javax.swing.JFrame;
import javax.swing.JLabel;
import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.Font;

public class ScratchUnicodeCharacters {
    public static void main(String[] args) {
        int num = Integer.parseInt( " 20E3 " , 16);

        // Below string should have Korean characters
        String string = " ?? ? ??? ? ?? ? 1234567890 " ;

        JFrame frame= new JFrame();
        frame.setLayout(new FlowLayout());

        JLabel label = new JLabel( " Arial " + string);
        label.setBorder(BorderFactory.createLineBorder(Color.black));
        label.setFont(new Font( " Arial " , Font.PLAIN, 12));

        JLabel label2 = new JLabel( " Monospaced " + string);
        label2.setBorder(BorderFactory.createLineBorder(Color.black));
        label2.setFont(new Font(Font.MONOSPACED, Font.PLAIN, 12));

        frame.add(label);
        frame.add(label2);

        frame.setVisible(true);
        frame.pack();
    }
}

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

CUSTOMER SUBMITTED WORKAROUND :
Using a Monospaced font works.