java redirect 301

I need to do a permanent targeting via servlet in java, with the following code:

Here it directs with status 301

response.setStatus(HttpServletResponse.SC_MOVED_PERMANENTLY);
response.setHeader("Location", "https://google.com.br");

Here it directs with status 200

response.setStatus(HttpServletResponse.SC_MOVED_PERMANENTLY);
response.setHeader("Location", "https://www.google.com.br");

Does anyone know why they do not have the same behavior? I'm having trouble directing to other domains, where they always get 200 status.