CodeRankGPT -
An AI Assistant for your coding test. Make sure to get hired 🎯
MD5 (Message-Digest algorithm 5) is a widely-used cryptographic hash function that produces a 128-bit (16-byte) hash value. It is commonly used to verify data integrity. This Java program is designed to take a string input from the user and generate its MD5 hash.
An AI Assistant for your coding test. Make sure to get hired 🎯
CodeRankGPT is a tool powered by GPT-4 that quietly assists you during your coding interview, providing the solutions you need.
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The program uses Java's built-in MessageDigest class to create an instance of the MD5 hash function. It then feeds the user's input string to this function and collects the resulting hash value. The hash value is a byte array, which is then converted to a hexadecimal string for easier reading. If any error occurs during this process, such as the MD5 algorithm not being available, the program catches and prints the exception.
/**
*
*/
package com.javaaid.hackerrank.solutions.languages.java.advanced;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Scanner;
/**
*
*/
public class JavaMD5 {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
String s = sc.next();
System.out.println(getMD5(s));
sc.close();
}
private static String getMD5(String s) {
StringBuffer sb = new StringBuffer();
try {
MessageDigest md = MessageDigest.getInstance("MD5");
byte[] result = md.digest(s.getBytes());
for (int i = 0; i < result.length; i++) {
String hex = Integer.toHexString(0xff & result[i]);
if (hex.length() == 1)
sb.append('0');
sb.append(hex);
}
} catch (NoSuchAlgorithmException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return sb.toString();
}
}
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