MD5 HASH CODE IN JAVA !!!

Question

why generating md5 hash code in java using MassageDigest is not the same as what this website or others generate???
https://www.md5online.org/

Answer 1

How are you generating your hash?
https://www.baeldung.com/java-md5

Answer 2

Edgar Díaz exactly like this one
it works almost fine here but in eclipse you can see that some zero or sometimes some other things missed
https://code.sololearn.com/cevt24EuVhIY/?ref=app

Answer 3

I'm using this in eclipse
also I've never understood what is (0xFF & ndigest[i])
https://code.sololearn.com/c7N3WRF5ftwJ/?ref=app

Answer 4

For get hash md5 with pure java:
String password = "ILoveJava";
MessageDigest md = MessageDigest.getInstance("MD5");
md.update(password.getBytes());
byte[] digest = md.digest();
String myHash = DatatypeConverter
.printHexBinary(digest).toUpperCase();
I prefer to use apache commons:
String password = "ILoveJava";
String md5Hex = DigestUtils.md5Hex(password).toUpperCase();
https://www.baeldung.com/java-md5