title: how to convert hex to base64
body: <p>how to convert hex string into base64 ? I found this page <a href="http://home2.paulschou.net/tools/xlate/" rel="noreferrer">http://home2.paulschou.net/tools/xlate/</a> but I need some function in java: <code>String base64 = ...decoder(String hex);</code> I found something in the Internet but they are to difficult and use byte array. I am looking for something simplier
  thx a lot</p>