Java Unicode characters to UTF

Question

在Java中，如何将包含转义的Unicode字符的字符串转换为utf 8，例如从Rüppell's_Vulture转换为R％c3％bcppell's_Vulture

Answer 1

String s = URLDecoder.decode("R%c3%bcppell's_Vulture", "UTF-8");
String s = URLEncoder.encode("Rüppell's_Vulture", "UTF-8");

With % it is an URL encoding.

Answer 2

Copy it to byte array with getBytes("UTF-8). Like this:

byte[] utf = String.getBytes("UTF-8")

Do not know the way of dealing with it just with Strings (I believe they have fixed encoding).