in maven-jxr/src/main/java/org/apache/maven/jxr/JavaCodeTransform.java [466:474]
private Writer getWriter(Path destfile, String outputEncoding) throws IOException {
Writer fw;
if (outputEncoding != null) {
fw = new OutputStreamWriter(new FileOutputStream(destfile.toFile()), outputEncoding);
} else {
fw = new FileWriter(destfile.toFile());
}
return fw;
}