Package org.apache.commons.validator.routines.checkdigit

Class ISSNCheckDigit

java.lang.Object
org.apache.commons.validator.routines.checkdigit.ModulusCheckDigit
org.apache.commons.validator.routines.checkdigit.Modulus11iWeightCheckDigit
org.apache.commons.validator.routines.checkdigit.Modulus11XCheckDigit
org.apache.commons.validator.routines.checkdigit.ISSNCheckDigit
All Implemented Interfaces:
Serializable, CheckDigit
@Deprecated public final class ISSNCheckDigit extends Modulus11XCheckDigit
Deprecated.
International Standard Serial Number (ISSN) is an eight-digit serial number used to uniquely identify a serial publication. 
 The format is:

 ISSN dddd-dddC
 where:
 d = decimal digit (0-9)
 C = checksum (0-9 or X)

 The checksum is formed by adding the first 7 digits multiplied by
 the position in the entire number (counting from the right).
 For example, abcd-efg would be 8a + 7b + 6c + 5d + 4e +3f +2g.
 The check digit is modulus 11, where the value 10 is represented by 'X'
 For example:
 ISSN 0317-8471
 ISSN 1050-124X

Note: This class expects the input to be numeric only, with all formatting removed. For example: 

 03178471
 1050124X
Since:
1.5.0
See Also:

  • Constructor Details

    • ISSNCheckDigit

      public ISSNCheckDigit()
      Deprecated.

  • Method Details

    • getInstance

      public static CheckDigit getInstance()
      Deprecated.
      Gets the singleton instance of this class.
      Returns:
      A singleton instance of the class.