Java Barcode UPC-A Scanner Introduction
Top
Scanning and reading barcode UPC-A from image file is a key feature in OnBarcode
Barcode Reader for Java library SDK.
Java Barcode Reader is completely developed in Java SDK 1.4.2, and you can easy integrate the barcode reading feature in your Java project without any registration key, activation code.
Related barcode reader library API
Read QR Code in Java - Scan, Read QR Code barcode images using Java.
Read ISSN in Java - Scan, decode ISSN using Java.
Install Java Barcode Reader to your Java project
Top
- Copy BarcodeReader.jar to your Java project library folder.
- Add BarcodeReader.jar to your Java classpath.
Reading & Scanning UPC-A Barcodes in Java class
Top- tell BarcodeReader class where is the image file.
- here is the sample code:
- String[] datas = BarcodeReader.read(new File("C:/UPCA-Barcode-Image.gif"), BarcodeReader.UPCA);
- Pass your UPC-A barcode image file, and barcode type to BarcodeReader, and it will return all UPC-A barcode data in the image file.
Besides image file, you can also pass java.awt.Image or java.awt.image.RenderedImage object to the read method. - here is the sample code:
Common Asked Questions
What is a UPC-A barcode?
UPC-A barcode usually encodes a GTIN-12 code, which is a 12 digits Global Trade Item Number. The 12 digits Global Trade Item Number includes 11 digits of data message,
and one digit of check digit. Using Java UPC-A Barcode Reader Library, you can quickly enable UPC-A barcode reading and scanning feature
in your Java applications.
What is the difference between EAN-13 and UPC-A?
UPC-A Format barcodes have traditionally been used in the North America (USA and Canada), whereas EAN-13 format barcodes have been used throughout the rest of the world.
Java Barcode Reader SDK supports both UPC-A and EAN-13 barcode images scanning and reading in Java class.
What is the difference between UPC-A and UPC-E?
UPC-A is a 12-digit barcode, and UPC-E is a compressed UPC-A with 6 digits code.
Using Java UPC Barcode Reader and Scanner library, you can enable UPC-A and UPC-E reading and recognition functions with few lines of Java codes in JSP, Servlet, J2EE applications.
How to check if an UPC code is correct?
When a barcode device or barcode scanner software scan and read the a UPC barcode data, it will use the last checksum digit to verify the UPC-A data.
OnBarcode Java Barcode Reader library will automatically apply UPC-A checksum calculation rules to verify the scanned UPC-A data and the last checksum digit.
