Basic authorization is a security risk JAVA-S1019

import org.apache.http.client.methods.HttpPost;

// ...

// Using HttpPost from Apache HttpClient
// Apache provides a Base64 encoder class for convenience.
String encoding = Base64Encoder.encode ("login:passwd");
HttpPost post = new HttpPost(url);
post.setHeader("Authorization", "Basic " + encoding);

// or

import java.net.HttpUrlConnection;

// ...

// Using HttpURLConnection
String encoding = Base64.getEncoder().encodeToString(("login:passwd").getBytes("UTF-8"));
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("POST");
conn.setDoOutput(true);
conn.setRequestProperty("Authorization", "Basic " + encoding);