Java HttpURLConnection setAuthenticator

The setAuthenticator(Authenticator auth) is a method of Java HttpURLConnection class. This method is used to set the authentication request through HTTP protocol. If no authentication is sent then default authentication is used.

Syntax

Parameter

Auth - It is used by this HttpURLConnection.

Throw

UnsupportedOperationException - This exception occurred when implementation of authentication is not supported.

IllegalStateException - This exception occurred when URLConnection is already connected.

NullPointerException - This exception occurred when the supplied auth is null.

Example 1

import java.io.IOException; 
import java.io.InputStream;
import java.net.HttpURLConnection; 
import java.net.URL; 
import java.net.URLConnection;
import java.util.Base64;
public class JavaHttpURLConnectionsetAuthenticatorExample1 {
    //Starting the main method...
    public static void main(String h[]) throws IOException 
    { 
        //starting the try block
        try 
        {
        String link_url ;
        link_url="https://www.javatpoint.com";
        URL url = new URL(link_url);
        URLConnection uc = url.openConnection();
        String password = "123";
        String username = "Javatpoint";
        String userpass = username + ":" + password;
        System.out.println("https://www.javatpoint.com");
        String basicAuth = "Basic :" + new String(Base64.getEncoder().encode(userpass.getBytes()));
        System.out.println(basicAuth);
        uc.setRequestProperty ("Authorization", basicAuth);
        }
        catch (Exception e) 
        {
            System.out.println(e);
        }
    }
}

Test it Now

Output:

https://www.javatpoint.com
Basic :SmF2YXRwb2ludDoxMjM=

Example 2

import java.io.IOException; 
import java.io.InputStream;
import java.net.HttpURLConnection; 
import java.net.URL; 
import java.net.URLConnection;
import java.util.Base64;
public class JavaHttpURLConnectionsetAuthenticatorExample2 {
    //Starting the main method...
    public static void main(String h[]) throws IOException 
    { 
        //starting the try block
        try 
        {
        String link_url ;
        link_url="https://www.facebook.com";
        URL url = new URL(link_url);
        URLConnection uc = url.openConnection();
        String password = "563";
        String username = "facebook";
        String userpass = username + ":" + password;
        System.out.println("https://www.facebook.com");
        String basicAuth = "Basic : " + new String(Base64.getEncoder().encode(userpass.getBytes()));
        System.out.println(basicAuth);
        uc.setRequestProperty ("Authorization", basicAuth);
        }
        catch (Exception e) 
        {
            System.out.println(e);
        }
    }
}

Test it Now

Output:

https://www.facebook.com
Basic : ZmFjZWJvb2s6NTYz

Next TopicJava HttpURLConnection class

← prev next →

For Videos Join Our Youtube Channel: Join Now

Feedback

Send your Feedback to [email protected]

Help Others, Please Share

Learn Latest Tutorials

Splunk

SPSS

Swagger

Transact-SQL

Tumblr

ReactJS

Regex

Reinforcement Learning

R Programming

RxJS

React Native

Python Design Patterns

Python Pillow

Python Turtle

Keras

Preparation

Aptitude

Reasoning

Verbal Ability

Interview Questions

Company Questions

Trending Technologies

Artificial Intelligence

AWS

Selenium

Cloud Computing

Hadoop

ReactJS

Data Science

Angular 7

Blockchain

Git

Machine Learning

DevOps

B.Tech / MCA

DBMS

Data Structures

DAA

Operating System

Computer Network

Compiler Design

Computer Organization

Discrete Mathematics

Ethical Hacking

Computer Graphics

Software Engineering

Web Technology

Cyber Security

Automata

C Programming

C++

Java

.Net

Python

Programs

Control System

Data Mining

Data Warehouse

^{Like/Subscribe us for latest updates or newsletter}