Java 中二进制转换成十六进制的两种实现方法

/**  * 每个字节转成16进制,方法1  *  * @param result  */ private static String toHex(byte[] result) {   StringBuffer sb = new StringBuffer(result.length * 2);   for (int i = 0; i < result.length; i++) {     sb.append(Character.forDigit((result[i] & 240) >> 4, 16));     sb.append(Character.forDigit(result[i] & 15, 16));   }   return sb.toString(); }  

/**  * 每个字节转成16进制,方法2  *  * @param result  * @return  */ private static String toHex2(byte[] result) {   StringBuffer sb = new StringBuffer(result.length * 2);   for (int i = 0; i < result.length; i++) {     int hight = ((result[i] >> 4) & 0x0f);     int low = result[i] & 0x0f;     sb.append(hight > 9 ? (char) ((hight - 10) + 'a')         : (char) (hight + '0'));     sb.append(low > 9 ? (char) ((low - 10) + 'a') : (char) (low + '0'));   }   return sb.toString(); }