如何在java中将base16转换为base 64，反之亦然？

Question

How to convert base16 to base64 nad vice versa in java?can anyone help me by providing the code.

the value in base16 is : 567a3b23b683d8488d5d40d2a56e31d2
the value in base64 is : Vno7I7aD2EiNXUDSpW4x0g==

i'm expecting to get the 2nd value if i provided 1st one as input and convert base16 to base64 .

i'm getting the result on this website if i provide these values.

the value in base16 is : 567a3b23b683d8488d5d40d2a56e31d2 .
the value in base64 is : Vno7I7aD2EiNXUDSpW4x0g==

Answer 1

If you can use external libraries, the easiest thing would be to let something like Apache Commons Codec do the heavy lifting - decode the input using Hex and then encode it using Base64 :

String base16input = "567a3b23b683d8488d5d40d2a56e31d2";
byte[] decoded = new Hex().decodeHex(base16input);
String base64output = new String(new Base64().encode(decoded));