Java md5 hash

For uni I wrote a little program that implements a sort of md5 hash. Just a 10 min program but quite nice and useful I would hope. It takes in a file and outputs the md5 sum and the file name. Used this to compare files on a computer with the version on a server. There must be better versions out there but it works

/*
* See
* http://java.sun.com/j2se/1.4.2/docs/api/java/security/MessageDigest.html
* Basically a wrapper for the sun class
*/

import java.io.*;
import java.math.BigInteger;
import java.security.*;
import java.util.Scanner;

public class mdFive {

/**
* This function is passed a File name and it returns a md5 hash of
* this file.
* !!!! MADE STATIC SO I HAVE ONE FILE !!!!!
* !!!! NEVER DO THIS PLEASE REMOVE !!!!!
* @param FileToMd5
* @return The md5 string
*/
public static String md5File(String FileToMd5){
String outPutString = new String();
try {
MessageDigest algoToCrypt = MessageDigest.getInstance("MD5");
Scanner fileToCrypt = new Scanner(new File(FileToMd5));
/* Just to be on the safe side */
byte[] fileBuffer = null;
while( fileToCrypt.hasNextByte()){
algoToCrypt.update(fileBuffer, 0, fileToCrypt.nextByte());
}
/* Int would be to small and apparentelly you have to use a sign and magnitude */
BigInteger bigInt = new BigInteger(1, algoToCrypt.digest());
outPutString = bigInt.toString(16);
fileToCrypt.close();
} catch (Exception e) {
/* Not a big enough error to exit but still should tell someone */
System.err.println("Error while creating MD5 sum");
}
return outPutString;
}

/**
* The main programm
* @param args The arguments from the command line
*/
public static void main(String[] args) {
if(args.length == 0){
System.out.println("A MD5 Hascher \nUsage java mdFive ");
}else{
System.out.println( md5File(args[0]) + " , " + args[0]);
}
}
}