Skip navigation links
com.aspose.barcode.barcoderecognition

Enum ChecksumValidation

  • java.lang.Object
    • java.lang.Enum<ChecksumValidation>
      • com.aspose.barcode.barcoderecognition.ChecksumValidation
  • All Implemented Interfaces:
    java.io.Serializable, java.lang.Comparable<ChecksumValidation>

    public enum ChecksumValidation
extends java.lang.Enum<ChecksumValidation>

    Enable checksum validation during recognition for 1D barcodes.

    Default is treated as Yes for symbologies which must contain checksum, as No where checksum only possible.

    Checksum never used: Codabar

    Checksum is possible: Code39 Standard/Extended, Standard2of5, Interleaved2of5, Matrix2of5, ItalianPost25, DeutschePostIdentcode, DeutschePostLeitcode, VIN

    Checksum always used: Rest symbologies

     This sample shows influence of ChecksumValidation on recognition quality and results
 
     BarcodeGenerator generator = new BarcodeGenerator(EncodeTypes.EAN_13, "1234567890128");
 {
     generator.save("c:\\test.png");
 }
 BarCodeReader reader = new BarCodeReader("c:\\test.png", DecodeType.EAN_13))
 {
     //checksum disabled
     reader.setChecksumValidation(ChecksumValidation.OFF);
     for(BarCodeResult result : reader.readBarCodes())
     {
         System.out.println("BarCode CodeText: " + result.getCodeText());
         System.out.println("BarCode Value: " + result.getExtended().getOneD().getValue());
         System.out.println("BarCode Checksum: " + result.getExtended().getOneD().getCheckSum());
     }
 }
 BarCodeReader reader = new BarCodeReader("c:\\test.png", DecodeType.EAN_13);
 //checksum enabled
 reader.setChecksumValidation(ChecksumValidation.ON);
 for(BarCodeResult result : reader.readBarCodes())
 {
    System.out.println("BarCode CodeText: " + result.getCodeText());
    System.out.println("BarCode Value: " + result.getExtended().getOneD().getValue());
    System.out.println("BarCode Checksum: " + result.getExtended().getOneD().getCheckSum());
 }

    • Enum Constant Summary

      Enum Constants 
      Enum Constant and Description
      DEFAULT
      If checksum is required by the specification - it will be validated.
      OFF
      Do not validate checksum.
      ON
      Always validate checksum if possible.

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method and Description
      int getValue() 
      static ChecksumValidation valueOf(java.lang.String name)
      Returns the enum constant of this type with the specified name.
      static ChecksumValidation[] values()
      Returns an array containing the constants of this enum type, in the order they are declared.

      • Methods inherited from class java.lang.Enum

        clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

      • Methods inherited from class java.lang.Object

        getClass, notify, notifyAll, wait, wait, wait

    • Enum Constant Detail

      • DEFAULT

        public static final ChecksumValidation DEFAULT
        If checksum is required by the specification - it will be validated.

    • Method Detail

      • values

        public static ChecksumValidation[] values()
        Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows: 
        for (ChecksumValidation c : ChecksumValidation.values())
    System.out.println(c);
        Returns:
        an array containing the constants of this enum type, in the order they are declared

      • valueOf

        public static ChecksumValidation valueOf(java.lang.String name)
        Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
        Parameters:
        name - the name of the enum constant to be returned.
        Returns:
        the enum constant with the specified name
        Throws:
        java.lang.IllegalArgumentException - if this enum type has no constant with the specified name
        java.lang.NullPointerException - if the argument is null

      • getValue

        public int getValue()