Java - HttpURLConnection setInstanceFollowRedirects() Method

The Java HttpURLConnection setInstanceFollowRedirects() method sets whether HTTP redirects (requests with response code 3xx) should be automatically followed by this HttpURLConnection instance.

The default value comes from followRedirects, which defaults to true.

Declaration

Following is the declaration for java.net.URLConnection.setInstanceFollowRedirects() method

public void setInstanceFollowRedirects(boolean followRedirects)

Parameters

followRedirects − a boolean indicating whether or not to follow HTTP redirects.

Return Value

the value of this HttpURLConnection's instanceFollowRedirects field.

Exception

NA

Example 1

The following example shows the usage of Java HttpURLConnection setInstanceFollowRedirects() method for a valid url with https protocol. In this example, we're creating an instance of URL class. Using url.openConnection() method, we're getting the HttpURLConnection instance. Using getInstanceFollowRedirects(), we're checking the instanceFollowRedircts flag value printing the same. Now using setInstanceFollowRedirects() method, we're changing the value of instanceFollowRedircts flag and printing the same again −

package com.tutorialspoint;

import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;

public class HttpUrlConnectionDemo {
   public static void main(String [] args) {
      try {
         URL url = new URL("https://www.tutorialspoint.com/index.htm?language=en#j2se");
         HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
         urlConnection.connect();  
         System.out.println("Connected.");  

         boolean result = urlConnection.getInstanceFollowRedirects();
         System.out.println("getInstanceFollowRedirects: " + result);  

         urlConnection.setInstanceFollowRedirects(false);
         result = urlConnection.getInstanceFollowRedirects();
         System.out.println("getInstanceFollowRedirects: " + result); 

         urlConnection.disconnect();
         System.out.println("Disconnected.");  
      } catch (IOException e) {
         e.printStackTrace();
      }
   }
}

Let us compile and run the above program, this will produce the following result −

Output

Connected.
getInstanceFollowRedirects: true
getInstanceFollowRedirects: false
Disconnected.

Example 2

The following example shows the usage of Java HttpURLConnection setInstanceFollowRedirects() method for a valid url with http protocol. In this example, we're creating an instance of URL class. Using url.openConnection() method, we're getting the HttpURLConnection instance. Using getInstanceFollowRedirects(), we're checking the instanceFollowRedircts flag value printing the same. Now using setInstanceFollowRedirects() method, we're changing the value of instanceFollowRedircts flag and printing the same again −

package com.tutorialspoint;

import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;

public class HttpUrlConnectionDemo {
   public static void main(String [] args) {
      try {
         URL url = new URL("http://www.tutorialspoint.com/index.htm?language=en#j2se");
         HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
         urlConnection.connect();  
         System.out.println("Connected.");  

         boolean result = urlConnection.getInstanceFollowRedirects();
         System.out.println("getInstanceFollowRedirects: " + result);  

         urlConnection.setInstanceFollowRedirects(false);
         result = urlConnection.getInstanceFollowRedirects();
         System.out.println("getInstanceFollowRedirects: " + result); 

         urlConnection.disconnect();
         System.out.println("Disconnected.");  
      } catch (IOException e) {
         e.printStackTrace();
      }
   }
}

Let us compile and run the above program, this will produce the following result −

Output

Connected.
getInstanceFollowRedirects: true
getInstanceFollowRedirects: false
Disconnected.

Example 2

The following example shows the usage of Java HttpURLConnection setInstanceFollowRedirects() method for a valid url with http protocol. In this example, we're creating an instance of URL class. Using url.openConnection() method, we're getting the HttpURLConnection instance. Using getInstanceFollowRedirects(), we're checking the instanceFollowRedircts flag value printing the same. Now using setInstanceFollowRedirects() method, we're changing the value of instanceFollowRedircts flag and printing the same again −

package com.tutorialspoint;

import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;

public class HttpUrlConnectionDemo {
   public static void main(String [] args) {
      try {
         URL url = new URL("http://www.google.com");
         HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
         urlConnection.connect();  
         System.out.println("Connected.");  

         boolean result = urlConnection.getInstanceFollowRedirects();
         System.out.println("getInstanceFollowRedirects: " + result);  

         urlConnection.setInstanceFollowRedirects(false);
         result = urlConnection.getInstanceFollowRedirects();
         System.out.println("getInstanceFollowRedirects: " + result); 

         urlConnection.disconnect();
         System.out.println("Disconnected.");  
      } catch (IOException e) {
         e.printStackTrace();
      }
   }
}

Let us compile and run the above program, this will produce the following result −

Output

Connected.
getInstanceFollowRedirects: true
getInstanceFollowRedirects: false
Disconnected.