Java Barcode QR Code Scanner Introduction
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Scanning and reading barcode QR Code from image file is a key feature in OnBarcode
Java Barcode Scanner 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 scanner library API
Scan Codabar in Java - Scan, Read Codabar using Java.
Scan UPC-A in Java - Scan, decode UPC-A using Java.
Scan ISSN in Java - Scan, decode ISSN using Java.
Install Java Barcode Reader to your Java project
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- Copy BarcodeReader.jar to your Java project library folder.
- Add BarcodeReader.jar to your Java classpath.
Reading & Scanning QR Code 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:/QRCode-Barcode-Image.gif"), BarcodeReader.QRCode);
- Pass your QR Code barcode image file, and barcode type to BarcodeReader, and it will return all QR Code 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
How to read QR Code on desktop?
You can use barcode scanner software installed on computer or barcode scanner device to read and extract QR Code from photo or image files.
OnBarcode Java QR Code Reader library helps Java developers to build desktop application (Windows, Linux, macOS) with QR Code scanning and reading functions
with few lines of Java source codes.
How to read a QR code that's on your screen?
To read a QR Code on your computer screen, try the following steps
- Take and save the screenshot of the QR Code image on the computer
- Use QR Code scanner desktop software to read the QR Code from the photo or image file
How do I scan a QR code with my smart phone?
You can download and install QR Code Scanner app on the iPhone or Android phones. OnBarcode Java QR Code Scanner library supports building application for Adroid with
QR Code reading functions.
How do you scan a QR code from an image?
Online QR Code decoder, QR Code Scanner software allow you to scan and extract a QR Code from an images.
Using OnBarcode QR Code Reader Java library, you can quickly build online QR Code scanner based on Java JSP, Servlet, Spring framework
using Java api.
Is there a scanner or reader for QR codes?
You can use iPhone and Android phone build-in QR Code Scanner app to read the QR Codes. If you are a Java developer, you can easily
build app for Android with QR Code Reader embed using Java Barcode Reader library.
