Java - URLConnection setUseCaches(boolean usecaches)

Description

The Java URLConnection setUseCaches(boolean usecaches) method sets the value of a URLConnection's useCaches flag.

Declaration

Following is the declaration for java.net.URLConnection.setUseCaches(boolean usecaches) method:

public void setUseCaches(boolean usecaches)

Parameters

usecaches − a boolean indicating whether or not to allow caching

Return Value

the default value of a URLConnection's useCaches flag.

Exception

IllegalStateException − if already connected

Example 1

The following example shows the usage of Java URLConnection setUseCaches() 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 URLConnection instance. Using getUseCaches(), we're getting the default value of the useCaches flag of URLConnection instance and printing the same. Then using setUseCaches() method we've change the value of useCaches flag to false and printed the same again −

package com.tutorialspoint;

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

public class UrlConnectionDemo {
   public static void main(String [] args) {
      try {
         URL url = new URL("https://www.tutorialspoint.com");
         URLConnection urlConnection = url.openConnection();

         System.out.println(urlConnection.getUseCaches());
         urlConnection.setUseCaches(false);
         System.out.println(urlConnection.getUseCaches());
      } catch (IOException e) {
         e.printStackTrace();
      }
   }
}

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

Output

true
false

Example 2

The following example shows the usage of Java URLConnection setUseCaches() 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 URLConnection instance. Using getUseCaches(), we're getting the default value of the useCaches flag of URLConnection instance and printing the same. Then using setUseCaches() method we've change the value of useCaches flag to false and printed the same again −

package com.tutorialspoint;

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

public class UrlConnectionDemo {
   public static void main(String [] args) {
      try {
         URL url = new URL("http://www.tutorialspoint.com");
         URLConnection urlConnection = url.openConnection();

         System.out.println(urlConnection.getUseCaches());
         urlConnection.setUseCaches(false);
         System.out.println(urlConnection.getUseCaches());
      } catch (IOException e) {
         e.printStackTrace();
      }
   }
}

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

Output

true
false

Example 3

The following example shows the usage of Java URLConnection setUseCaches() method for a url of google with http protocol. In this example, we're creating an instance of URL class. Using url.openConnection() method, we're getting the URLConnection instance. Using getUseCaches(), we're getting the default value of the useCaches flag of URLConnection instance and printing the same. Then using setUseCaches() method we've change the value of useCaches flag to false and printed the same again −

package com.tutorialspoint;

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

public class UrlConnectionDemo {
   public static void main(String [] args) {
      try {
         URL url = new URL("http://www.google.com");
         URLConnection urlConnection = url.openConnection();

         System.out.println(urlConnection.getUseCaches());
         urlConnection.setUseCaches(false);
         System.out.println(urlConnection.getUseCaches());
      } catch (IOException e) {
         e.printStackTrace();
      }
   }
}

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

Output

true
false