Given a URL as string, we need to find if the given URL is valid or not.
Input : str = "https://www.geeksforgeeks.org/" Output : Yes Input : str = "https:// www.geeksforgeeks.org/" Output : No Note that there is a space after https://
Using java.net.url
We can use java.net.url class to validate a URL. The idea is to create a URL object from the specified String representation. If we do not get exception while creating the object, we return true. Else we return false.
// Java program to check if a URL is valid // using java.net.urlimport java.net.URL;  class Test {      /* Returns true if url is valid */    public static boolean isValid(String url)    {        /* Try creating a valid URL */        try {            new URL(url).toURI();            return true;        }                  // If there was an Exception        // while creating URL object        catch (Exception e) {            return false;        }    }          /*driver function*/        public static void main(String[] args)    {        if (isValid(url1))             System.out.println("Yes");        else            System.out.println("No");                           if (isValid(url2))             System.out.println("Yes");        else            System.out.println("No");                    }} |
Output:
Yes No
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