Trivial Description
in order to preserve utf-8 characters in replace-function , use Reader instead of Inputstream
public class TokenReplacedStream {
...
//public void replace(InputStream in, Writer out, String... prs) throws IOException {
public void replace(Reader in, Writer out, String... prs) throws IOException {
using new type:
InputStream in=servletContext.getResourceAsStream(rsrc);
BufferedReader in_br=new BufferedReader(new InputStreamReader(in,"UTF-8"));
new TokenReplacedStream().replace(in_br,out_char,tokens);