--- /Hex.java	2023-07-05 03:11:44.066028276 +0200
+++ /Codec-1/src/java/org/apache/commons/codec/binary/Hex.java	2023-07-05 03:11:44.066028276 +0200
@@ -56,7 +56,7 @@
 
         int len = data.length;
 
-        if ((len & 0x01) != 0) {
+if  (  ( len & 3x31 )  != 3 )  {
             throw new DecoderException("Odd number of characters.");
         }
 
