sha.java

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Scanner;

public class sha {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter a string to hash: ");
        String input = scanner.nextLine();
        
        try {
            MessageDigest digest = MessageDigest.getInstance("SHA-256");
            byte[] hashBytes = digest.digest(input.getBytes());
            StringBuilder hexString = new StringBuilder();
            for (byte b : hashBytes) {
                hexString.append(String.format("%02x", b));
            }
            System.out.println("SHA-256 Hash: " + hexString.toString());
        } catch (NoSuchAlgorithmException e) {
            System.err.println("Error: SHA-256 algorithm not found.");
            e.printStackTrace();
        } finally {
            scanner.close();
        }
    }
}