A QR code is a type of barcode that can contain different information in it. You can use a QR code reader on your smartphone to scan it and read the information. QR codes are used in many different ways, like showing product details, making payments with your phone, and access control. In this article, we’ll talk about how to use Java to scan QR codes programmatically.
Java API for QR Code Scanning
GroupDocs.Parser for Java API is a tool that helps developers extract information from different types of documents like PDFs, Word files, and Excel spreadsheets. With it, you can extract text, pictures, barcodes, and other structured content from documents. Now let’s move on and scan QR codes from images in your application using a very small piece of Java code.
You can download the JAR file from the downloads section or use the latest repository and dependency Maven configurations within your Java applications.
<dependency>
<groupId>com.groupdocs</groupId>
<artifactId>groupdocs-parser</artifactId>
<version>23.2</version>
</dependency>
How to Scan QR Code using Java
These simple steps will help you realize that scanning a QR code is not as difficult as you may think. Take a look at the following instructions on how to read a QR code image:
- Load the QR Code image using the Parser class.
- Get the QR Code(s) of the loaded image.
- Extract the enclosed message from the QR Code using the getValue method.
The following Java code scans the QR code image within the application:
Get a Free License
You can get a free temporary license to analyze the QR scanner and other features of the API without any evaluation limitations.
Conclusion
Now that you have acquired knowledge on how to easily scan QR codes from images using Java, you can use this newfound skill to create your own QR code reader or even develop an online QR code scanning application. Let’s see what you can do with the endless possibilities.
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