Convert Excel XLS or XLSX to CSV via Java

Convert Excel XLS or XLSX to CSV in Java using REST API.

Are you tired of manually converting your Excel files to CSV? With GroupDocs.Conversion Cloud SDK for Java, you can easily automate this process and save yourself time. Excel files are commonly used for storing and analyzing data. On the other hand, CSV is a popular file format for storing tabular data. CSV files are simpler and more lightweight than Excel files, making them easier to import into other applications. In this article, we’ll explore how to convert Excel (XLS/XLSX) to CSV in Java using REST API and provide a step-by-step guide on how to do it.

We will cover the following topics in this article:

Java Excel to CSV File Converter REST API and SDK Installation

GroupDocs.Conversion Cloud SDK for Java is a cloud-based document conversion solution that allows developers to convert a wide range of file formats to and from PDF, DOCX, XLSX, PPTX, HTML, and other formats. The SDK supports more than 50 file formats, including Word, PowerPoint, HTML, Excel, CSV, JSON, and many more. With GroupDocs.Conversion Cloud SDK for Java, you can automate the document conversion process and streamline your workflows. Integrating the API into Java-based applications is made simple and efficient, eliminating the need for additional software.

You can either download the API’s JAR file or install it using Maven by adding the following repository and dependency into your project’s pom.xml file:

Maven Repository:

<repository>
    <id>groupdocs-artifact-repository</id>
    <name>GroupDocs Artifact Repository</name>
    <url>https://repository.groupdocs.cloud/repo</url>
</repository>

Maven Dependency:

<dependency>
    <groupId>com.groupdocs</groupId
    <artifactId>groupdocs-conversion-cloud</artifactId>
    <version>23.4</version>
    <scope>compile</scope>
</dependency>

To use GroupDocs.Conversion Cloud SDK for Java, you need to sign up for a GroupDocs account and get your API key. Once you have the Client Id and Client Secret, add below code snippet in a Java-based application:

How to Convert Excel File to CSV in Java using REST API

To convert Excel to CSV file using GroupDocs.Conversion Cloud SDK for Java, you need to follow the steps below:

Upload the File

Firstly, upload the Excel sheet to the cloud using the code snippet given below:

As a result, the uploaded Excel file will be available in the files section of your dashboard on the cloud.

Convert Excel XLSX File to CSV in Java

Here’s a step-by-step guide and an example code snippet for how to use GroupDocs.Conversion Cloud SDK for Java to convert Excel files to CSV:

  • Firstly, import the required classes into your Java file.
  • Secondly, create an instance of the ConvertApi class.
  • Thirdly, create an instance of ConvertSettings class.
  • Next, provide your cloud storage name.
  • Now, set the source file path and the target format to “csv”.
  • After that, set the output file path.
  • Then, create the ConvertDocumentRequest class instance and pass the settings parameter.
  • Finally, convert Excel XLSX to CSV by calling the convertDocument() method and passing the ConvertDocumentRequest parameter.

The following code snippet demonstrates how to convert an XLSX file to a CSV file in Java using REST API:

You can see the output in the image below:

How to Convert XLSX File to CSV online in Java using REST API

Convert XLSX file to CSV file using Java.

Download the Converted File

The above code sample will save the converted CSV file in the cloud. You can download it using the following code sample:

Free Online XLSX to CSV Converter

How to convert Excel to CSV online for free? Please try the following free XLSX to CSV converter online. This converter is developed using the above-mentioned GroupDocs.Conversion Cloud REST API.

Conclusion

To conclude converting Excel files to CSV format is a common task, and GroupDocs.Conversion Cloud SDK for Java makes it easy and efficient. Hopefully, you have enjoyed the article and learned:

  • how to convert Excel XLSX to CSV file programmatically in Java;
  • programmatically upload Excel files and then download the converted CSV file from the cloud;
  • and convert an Excel file to CSV for free using a free online Excel to CSV converter tool.

In addition, you can learn more about GroupDocs file format conversion API using the documentation, or by examples available on GitHub. We also provide an API Reference section that lets you visualize and interact with our APIs directly through the browser.

Finally, we keep writing new blog articles on different file formats and conversions using REST API. So, please get in touch for the regular updates.

Ask a question

You can ask your queries about Excel to CSV converter API, via our forum.

FAQs

How do I convert an Excel file to a CSV in Java?

You need to upload the Excel file to the cloud, then convert it to CSV format using the Java code provided. You will also need to download the converted file. The Java code snippet provides the steps to convert an Excel file to a CSV file using REST API.

How to convert Excel to CSV on Windows?

Please visit the download link to download the Excel to CSV offline converter for Windows. This free Excel to CSV converter can be used to convert Excel sheets to CSV files on Windows quickly, with a single click.

How do I convert an Excel to a CSV file online for free?

Please follow the step-by-step instructions to convert an Excel file to CSV online for free:

  • Open online Excel to CSV converter.
  • Now, click inside the file drop area to upload an Excel file or drag & drop an Excel file.
  • Next, click on the Convert Now button. Online Excel to CSV converter will change Excel into a CSV file.
  • The download link of the output file will be available instantly after conversion.

Is GroupDocs.Conversion Cloud SDK for Java free to use?

GroupDocs.Conversion Cloud SDK for Java offers a free trial account that allows you to test the API and its features. After the trial period, you will need to purchase a subscription to continue using the API.

See Also

If you want to learn more about related topics, we recommend reading the articles listed below: