How to convert a byte array to a hex string in Java?

Question

I have a byte array filled with hex numbers and printing it the easy way is pretty pointless because there are many unprintable elements. What I need is the exact hexcode in

Answer 1

We don't need to use any external library or to write code based on loops and constants.
Is enough just this:

byte[] theValue = .....
String hexaString = new BigInteger(1, theValue).toString(16);