This article guides on how to change QR code color with Java REST API. You will develop a colored QR code generator with Java REST Interface using a Java-based Cloud SDK. All the parameters for customization of the QR code image will be discussed in detail.

Prerequisite

• Create an account and get API credentials for creating a coloured QR Code
• Download Aspose.BarCode Cloud SDK for Java to generate a QR Code and set foreground/background color
• Set up a Java project with the above SDK

Steps to Change Color of QR Code with Java Low Code API

1. Include the Aspose.BarCode Cloud SDK API and Model namespaces to access barcode generation classes
2. Create a Configuration object and set the API base URL, client ID, and client secret for authentication with Aspose Cloud
3. Specify the name of the output image file where the generated QR code will be saved
4. Create a GenerateApi object using the configuration to enable barcode generation
5. Call the GenerateAsync() method with parameters such as barcode type, input text, image format, and custom foreground/background colors
6. Create a file stream with the specified file name and copy the generated QR code data into it

These steps summarize how to create a colored QR code with Java RESTful Service. First, connect to Aspose.BarCode Cloud by providing your credentials and setting up the API, then generating a QR code with your chosen text, colors, and image format. Finally, save the QR code to a file on the computer.

Code to Create Colored QR Code with Java-based API

The above code demonstrates the process of setting QR code background color with Java REST API. This method lets you create a barcode by sending a GET request with details such as the type, text to encode, colors, size, and rotation. Once generated, it gives you the barcode image as a stream that you can easily save or use in your application.

This article guides on creating a custom color QR code. To generate a simple QR code, refer to the article on Generate QR with Java REST API.