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  1. public class crc
  2. {    public static byte crc8 (String stringData)
  3.     {
  4.         int len = stringData.length();
  5.         int i = 0;
  6.         byte crc = 0x00;
  7.         while (len-- > 0) {
  8.             byte extract = (byte) stringData.charAt(i++);
  9.             for (byte tempI = 8; tempI != 0; tempI--) {
  10.                 byte sum = (byte) ((crc & 0xFF) ^ (extract & 0xFF));
  11.                 sum = (byte) ((sum & 0xFF) & 0x01);
  12.                 crc = (byte) ((crc & 0xFF) >>> 1);
  13.                 if (sum != 0) {
  14.                     crc = (byte)((crc & 0xFF) ^ 0x8C);
  15.                 }
  16.                 extract = (byte) ((extract & 0xFF) >>> 1);
  17.             }
  18.         }
  19.         return crc;
  20.     }
  21.  
  22.     public static void main (String args[])
  23.     {
  24.         String msg = "101011001";
  25.         byte crc8result = crc8(msg);
  26.  
  27.         String s1 = String.format("%8s", Integer.toBinaryString(crc8result & 0xFF)).replace(' ', '0');
  28.         System.out.println(s1); // 10000001
  29.         String mesgWithCRC = msg + s1;
  30.         System.out.println(mesgWithCRC);
  31.  
  32.         byte newCrc8Result = crc8(mesgWithCRC);
  33.         String s2 = String.format("%8s", Integer.toBinaryString(newCrc8Result & 0xFF)).replace(' ', '0');
  34.         System.out.println(s2); // 10000001
  35.  
  36.     }
  37. }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
Main.java:1: error: class crc is public, should be declared in a file named crc.java
public class crc
       ^
1 error
stdout
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Standard output is empty
https://ideone.com/sPb1jC
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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