Here is Java SHA-256 solution - https://programmingoneonone.com/hackerrank-java-sha-256-problem-solution.html

import java.io.; import java.util.; import java.security.; import java.nio.charset.;

public class Solution {

public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String originalString = sc.nextLine();

    try {
        MessageDigest digest = MessageDigest.getInstance("SHA-256");
        byte[] encodedhash = digest.digest(
            originalString.getBytes(StandardCharsets.UTF_8));
        System.out.println(bytesToHex(encodedhash));
    }
    catch (NoSuchAlgorithmException e) {
        System.out.println(e);
    }
}

private static String bytesToHex(byte[] hash) {
    StringBuilder hexString = new StringBuilder(2 * hash.length);
    for (int i = 0; i < hash.length; i++) {
        String hex = Integer.toHexString(0xff & hash[i]);
        if(hex.length() == 1) {
            hexString.append('0');
        }
        hexString.append(hex);
    }
    return hexString.toString();
}

}

import java.nio.charset.StandardCharsets; import java.math.BigInteger; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException;

public class Solution { public static void main(String[] args) { // Create a Scanner to read input from the user Scanner scanner = new Scanner(System.in);

    // Prompt the user to enter the input string

    String inputString = scanner.nextLine();

    // Compute the SHA-256 hash of the input string
    String hashValue = computeSHA_256Hash(inputString);

    // Print the hash value
    System.out.println( hashValue);
}

// Function to compute the SHA-256 hash of a given string
public static String computeSHA_256Hash(String input) {
    try {
        // Create a MessageDigest instance for SHA-256
        MessageDigest digest = MessageDigest.getInstance("SHA-256");

        // Update the digest with the input bytes
        digest.update(input.getBytes());

        // Compute the hash
        byte[] hashBytes = digest.digest();

        // Convert the hash bytes to a hexadecimal string
        StringBuilder hexString = new StringBuilder();
        for (byte b : hashBytes) {
            hexString.append(String.format("%02x", b));
        }

        // Return the hexadecimal string representation of the hash
        return hexString.toString();
    } catch (NoSuchAlgorithmException e) {
        // If the SHA-256 algorithm is not available, print an error message
        System.err.println("SHA-256 algorithm not available");
        e.printStackTrace();
        return null;
    }
}

}

The final HackerRank Challenge turned out to be the one where I only had to copy paste, there was no other way, Thank You @RodneyShag