question: public static InetAddress hexToInet6Address ( String addrHexString ) throws IllegalArgumentException { try { return numericToInetAddress ( String . format ( "%s:%s:%s:%s:%s:%s:%s:%s" , addrHexString . substring ( 0 , 4 ) , addrHexString . substring ( 4 , 8 ) , addrHexString . substring ( 8 , 12 ) , addrHexString . substring ( 12 , 16 ) , addrHexString . substring ( 16 , 20 ) , addrHexString . substring ( 20 , 24 ) , addrHexString . substring ( 24 , 28 ) , addrHexString . substring ( 28 , 32 ) ) ) ; } catch ( Exception e ) { Log . e ( "NetworkUtils" , "error in hexToInet6Address(" + addrHexString + "): " + e ) ; throw new IllegalArgumentException ( e ) ; } }
target:  Convert a 32 char hex string into a Inet6Address. throws a runtime exception if the string isn't 32 chars, isn't hex or can't be made into an Inet6Address