How to invoke web service with authentication

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This post was updated on Mar 22, 2016; 8:48pm.
Hi, all.

I'm calling a web service with java using this java code to authenticate.

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Authenticator authenticator = new Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
String user = "myuser";
String password = "mypwd";
System.out.println("Feeding username and password");
PasswordAuthentication auth = new PasswordAuthentication(user, password.toCharArray());
return auth;
}};
Authenticator.setDefault(authenticator);
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I'm looking for an example of smalltak code that does the same thing.