Java , , HttpURLConnection/URLConnection.

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Authenticator.setDefault ( Authenticator () {
     getPasswordAuthentication PasswordAuthentication () {
          PasswordAuthentication ( , password.toCharArray ());
    }
});

Authenticator URLConnection. .

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Authenticator JDK 1.2 / . Sun (sun.misc.BASE64Encoder ()) . .

Java URLConnection API setAuthenticator (Authenticator) multi-threaded .