Any convenient to know language used with a UTF8 string?

Question

I've got some UTF-8 txt files.
Each file contains different language, english, chinese...etc
And they are all in UTF-8 format.
Now, how can I know the exact language used in the file?
As all are in UTF-8 format, should I calculate the text byte to classify them?

Answer 1

You may not know the language, but at least you can know the unicode block of a character.
For example
char c = '\u4ec1';//CJK (chinese-japanese-korean)
java.lang.Character.UnicodeBlock block = java.lang.Character.UnicodeBlock.of(c);
System.out.println(block.toString());