Package net.sf.jazzlib

Interface Checksum

All Known Implementing Classes:
Adler32, CRC32
public interface Checksum
Interface to compute a data checksum used by checked input/output streams. A data checksum can be updated by one byte or with a byte array. After each update the value of the current checksum can be returned by calling getValue. The complete checksum object can also be reset so it can be used again with new data.
See Also:

  • Method Summary

    Modifier and Type
    Method
    Description
    long
    getValue()
    Returns the data checksum computed so far.
    void
    reset()
    Resets the data checksum as if no update was ever called.
    void
    update(byte[] buf, int off, int len)
    Adds the byte array to the data checksum.
    void
    update(int bval)
    Adds one byte to the data checksum.

  • Method Details

    • getValue

      long getValue()
      Returns the data checksum computed so far.

    • reset

      void reset()
      Resets the data checksum as if no update was ever called.

    • update

      void update(int bval)
      Adds one byte to the data checksum.
      Parameters:
      bval - the data value to add. The high byte of the int is ignored.

    • update

      void update(byte[] buf, int off, int len)
      Adds the byte array to the data checksum.
      Parameters:
      buf - the buffer which contains the data
      off - the offset in the buffer where the data starts
      len - the length of the data