Package org.seppiko.commons.utils

Class CRC16

java.lang.Object
org.seppiko.commons.utils.CRC16
All Implemented Interfaces:
java.util.zip.Checksum
public class CRC16
extends java.lang.Object
implements java.util.zip.Checksum
A class that can be used to compute the CRC-16 of a data stream.
Author:
Leonard Woo

  • Constructor Summary

    Constructors
    Constructor Description
    CRC16()
    Create CRC-16 object

  • Method Summary

    Modifier and Type Method Description
    long getValue()
    Returns CRC-16 value.
    void reset()
    Resets CRC-16 to initial value.
    void update​(byte[] b, int off, int len)
    Updates the CRC-16 checksum with the specified array of bytes.
    void update​(int b)
    Updates the CRC-16 checksum with the specified byte (the low eight bits of the argument b).

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    Methods inherited from interface java.util.zip.Checksum

    update, update

  • Constructor Details

    • CRC16

      public CRC16()
      Create CRC-16 object

  • Method Details

    • update

      public void update​(int b)
      Updates the CRC-16 checksum with the specified byte (the low eight bits of the argument b).
      Specified by:
      update in interface java.util.zip.Checksum
      Parameters:
      b - number

    • update

      public void update​(byte[] b, int off, int len) throws java.lang.NullPointerException, java.lang.ArrayIndexOutOfBoundsException
      Updates the CRC-16 checksum with the specified array of bytes.
      Specified by:
      update in interface java.util.zip.Checksum
      Parameters:
      b - data
      off - data init offset
      len - data length
      Throws:
      java.lang.NullPointerException - data is null
      java.lang.ArrayIndexOutOfBoundsException - if off is negative, or len is negative, or off+len is negative * or greater than the length of the array b

    • getValue

      public long getValue()
      Returns CRC-16 value.
      Specified by:
      getValue in interface java.util.zip.Checksum
      Returns:
      CRC-16

    • reset

      public void reset()
      Resets CRC-16 to initial value.
      Specified by:
      reset in interface java.util.zip.Checksum