Being able to specify in the net.sourceforge.cobertura.reporting.Main class is only character-code of the input file specification.
When you make HTML
When writing it, it is used though the HTMLReport class is used.
The character-code of IOUtil.getPrintWriter is fixed, and it is fixed to "UTF-8", and the character-code in made HTML is fixed to UTF-8.
Therefore, I want you to be able to specify the character-code when outputting it from the outside.
cobertura version 184.108.40.206
177 public static PrintWriter getPrintWriter(File file) throws UnsupportedEncodingException, FileNotFoundException
179 Writer osWriter = new BufferedWriter (new OutputStreamWriter(new FileOutputStream(file), "UTF-8"), 16384); ←★
180 PrintWriter pw = new PrintWriter(osWriter, false);
181 return pw;