convert chinese character to unicode

hello,i have a problem.how can i know the unicode of chinese character in a file?like this character ' 称 ' in a file a.txtthen how can i do to read the a.txt file then get the unicode of the character?really need help..
[263 byte] By [s1au_k14a] at [2007-11-27 9:39:10]
# 1
i have got the solution,just use the "native2ascii.exe" that have been included in the jdk.then i have a new question,do anybody know how the "native2ascii.exe" works?
s1au_k14a at 2007-7-12 23:13:57 > top of Java-index,Desktop,I18N...
# 2
Have you read this? http://java.sun.com/j2se/1.4.2/docs/tooldocs/windows/native2ascii.html
uncle_alicea at 2007-7-12 23:13:57 > top of Java-index,Desktop,I18N...
# 3
i have read that. what i mean is, do you know the source code of that "native2ascii.exe"?i want to know what is the algorithm and the coding of that tool.thanks
s1au_k14a at 2007-7-12 23:13:58 > top of Java-index,Desktop,I18N...