Question

I am trying to use the Base64 encoding functionality from Apache Common. But I seem to get the “wrong” result. The doc is here.

My code is like this:

import org.apache.commons.codec.binary.Base64;
String data = "hi,all,how can this happen?";

byte[] databytes = Base64.encodeBase64(data.getBytes());
data = databytes.toString();

System.out.println(data);
//the result is:
//[B@121cc40

However I encode the same string using Python, the code is:

import base64
print base64.b64encode("hi,all,how can this happen?")
#The result is aGksYWxsLGhvdyBjYW4gdGhpcyBoYXBwZW4/

How can there be such difference?

Answer 1

That’s not how you print a byte (or any other type of) array in Java, if you want to view its contents.
This is:

System.out.println(Arrays.toString(data));