Java Authenticator getRequestingScheme() Method

The getRequestingScheme() method of Authenticator class is used to get the scheme of the requester (the HTTP scheme for an HTTP firewall, for example).

Syntax:

Parameter:

No parameter is passed.

Return:

The scheme of the requester.

Throw:

Does not throw the exception.

Example 1

import java.io.BufferedReader; 
import java.io.IOException; 
import java.io.InputStreamReader; 
import java.net.Authenticator; 
import java.net.InetAddress; 
import java.net.MalformedURLException; 
import java.net.PasswordAuthentication; 
import java.net.URL; 
 public class AuthenticatorgetRequestingSchemeExample1 
{ 
    public static void main(String[] args)  
    { 
        try { 
            ClassAuthenticator obj1 =new ClassAuthenticator();
            Authenticator.setDefault(new ClassAuthenticator()); 
            URL url = new URL("https://www.javatpoint.com"); 
           
            BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream())); 
            String line; 
            System.out.println("Host using url.getHost ::"+url.getHost()); 
           obj1.getPasswordAuthentication() ;
            while ((line = in.readLine()) != null) { 
                System.out.println(line); 
            } 
            in.close(); 
        } catch (MalformedURLException e) { 
            System.out.println("Malformed URL: " + e.getMessage()); 
        } catch (IOException e) { 
           System.out.println("I/O Error: " + e.getMessage()); 
        } 
    } 
    public static class ClassAuthenticator extends Authenticator  
    { 
        protected PasswordAuthentication getPasswordAuthentication()  
        { 
            this.show();
            String username = "javaTpoint"; 
            String password = "java"; 
            return new PasswordAuthentication(username, password.toCharArray()); 
        } 
        void show()
        {
            String Scheme = getRequestingScheme(); 
            System.out.println("Scheme:" +Scheme);  
        }
    } 
}

Test it Now

Output:

Host using url.getHost ::www.javatpoint.com
Scheme:null
// Source code of https://www.javatpoint.com is printed.

Example 2

import java.io.BufferedReader; 
import java.io.IOException; 
import java.io.InputStreamReader; 
import java.net.Authenticator; 
import java.net.InetAddress; 
import java.net.MalformedURLException; 
import java.net.PasswordAuthentication; 
import java.net.URL; 
  
public class AuthenticatorgetRequestingSchemeExample2   
{ 
    public static void main(String[] args)  
    { 
          try { 
             ClassAuthenticator obj1 =new ClassAuthenticator();
            Authenticator.setDefault(new ClassAuthenticator()); 
            obj1.getPasswordAuthentication() ;
            URL url = new URL("https://www.javaTpoint.com"); 
            BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream())); 
            System.out.println("Protocol:" + url.getProtocol());  
            String line; 
            while ((line = in.readLine()) != null) { 
                System.out.println(line); 
            } 
            in.close(); 
        } catch (MalformedURLException e) { 
            System.out.println("Malformed URL: " + e.getMessage()); 
        } catch (IOException e) { 
            System.out.println("I/O Error: " + e.getMessage()); 
        } 
    } 
    public static class ClassAuthenticator extends Authenticator  
    { 
        protected PasswordAuthentication getPasswordAuthentication()  
        { 
            String name = getRequestingScheme(); 
            System.out.println("Scheme :" +name ); 
            String username = "javaTpoint"; 
            String password = "java"; 
            return new PasswordAuthentication(username, password.toCharArray()); 
        } 
    } 
} 

Test it Now

Output:

Scheme :null
Protocol:https
// Source code of https://www.javatpoint.com is printed.

Next TopicgetRequestingSite() Method

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