public static String binaryToHex ( byte [ ] data , int offset , int length ) { assert offset < data . length && offset >= 0 : offset + ", " + data . length ; int end = offset + length ; assert end <= data . length && end >= 0 : offset + ", " + length + ", " + data . length ; char [ ] chars = new char [ length * 2 ] ; int j = 0 ; for ( int i = offset ; i < end ; i ++ ) { int b = data [ i ] ; chars [ j ++ ] = hexDigit ( b >>> 4 & 0xF ) ; chars [ j ++ ] = hexDigit ( b & 0xF ) ; } return new String ( chars ) ; }
Convert a string of binary bytes to the equivalent hexadecimal string . The resulting String will have two characters for every byte in the input .