Japanese characters in Java

[Koji]

I'm attempting to write a program that quizzes the user on hiragana and katakana. Unfortunately, I can't figure out how to write the code so System.out.prin tln or JOptionPane.sho wMessageDialog will actually display the characters. I thought it might use Unicode, but if it does, I attempted it incorrectly.

Any assistance would be helpful! Thanks!

Koji