How to pass a byte array into IDAutomation's Java Barcode Components.

The following error may be caused by passing a byte array directly into the DataToEncode method that expects a string value:
java.lang.ArrayIndexOutOfBoundsException

The solutions are different depending on the symbology:

• PDF417: This is only possible with IDAutomation's PDF417 Java Products V 4.10 dated October, 2004 or later. When using PDF417, pass the byte array to the binaryCode field of the class library. Make sure to set the processTilde to false and set PDFMode to 0.
  For example:
  PDF417 bc=new PDF417();
  bc.processTilde=false;
  bc.PDFMode=0;
  bc.binaryCode=myByteArray;
  Download a working example of this code here...
   

• Data Matrix: When using Data Matrix, use the code example below to convert the byte array (encodedBytes) into a string that can be encoded in the code field. Make sure to set the encoding to E_BASE256 and processTilde to false.
  DataMatrix bc = new DataMatrix();
  bc.encoding = DataMatrix.E_BASE256;
  bc.processTilde=false;
  bc.code="";
  String binaryString;
  for (int i=0; i < encodedBytes.length; i++)
  {
      binaryString = Integer.toBinaryString((int)encodedBytes[i]);
      if (binaryString.length() > 8)
      binaryString = binaryString.substring(binaryString.length()-8,binaryString.length());
      bc.code = bc.code + (char) Integer.parseInt(binaryString,2);
  }
  Download a working example of this code here...

NOTE: a byte array should only be passed into IDAutomation's Java Barcode Products that can encode this information such as Data Matrix and PDF417.

See also:

• Product Support Index

TSI

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