URLs and URIs - Java Network Programming - page 167

public PasswordAuthentication getPasswordAuthentication () {
this . show ();
return this . response ;
}
}
Example 5-12 is a revised SourceViewer program that asks the user for a name and
password using the DialogAuthenticator class.
Example 5-12. A program to download password-protected web pages
import java.io.* ;
import java.net.* ;
public class SecureSourceViewer {
public static void main ( String args []) {
Authenticator . setDefault ( new DialogAuthenticator ());
for ( int i = 0 ; i < args . length ; i ++) {
try {
// Open the URL for reading
URL u = new URL ( args [ i ]);
try ( InputStream in = new BufferedInputStream ( u . openStream ())) {
// chain the InputStream to a Reader
Reader r = new InputStreamReader ( in );
int c ;
while (( c = r . read ()) != - 1 ) {
System . out . print (( char ) c );
}
}
} catch ( MalformedURLException ex ) {
System . err . println ( args [ 0 ] + " is not a parseable URL" );
} catch ( IOException ex ) {
System . err . println ( ex );
}
// print a blank line to separate pages
System . out . println ();
}
// Since we used the AWT, we have to explicitly exit.
System . exit ( 0 );
}
}