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Sunday, June 19, 2016

Hàm - Chuyễn từ String qua Hex

 public String convertStringToHex(String str){
   
   char[] chars = str.toCharArray();
   
   StringBuffer hex = new StringBuffer();
   for(int i = 0; i < chars.length; i++){
     hex.append(Integer.toHexString((int)chars[i]));
   }
   
   return hex.toString();
  }
  

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