Convert CSV to JSON and JSON to CSV in Java

How to convert CSV to JSON array and nested JSON to CSV in Java
Convert CSV to JSON and JSON to CSV in Java

CSV (Comma Separated Values) file is a text file which allows data to be saved in a table structured format. It is a simple, common, and plain text format for data storage. CSV does not support complex data and data hierarchies. JSON (JavaScript Object Notation) is a very easy to use, read, write, and fast data format. It is used as an alternative to XML but is less secure and has no error handling. In certain cases you may need to transform the tabular data to human-readable text to store and transmit data objects, or vice versa. Therefore, this article demonstrates how to convert CSV to JSON and JSON to CSV in Java.

We will cover the following points in this article:

Java CSV to JSON and JSON to CSV Converter API – Installation

To export JSON to CSV or large CSV to JSON in java, I will be using the Java SDK of GroupDocs.Conversion Cloud API. This Java library is easy to install and offers a wide range of methods to achieve CSV to JSON and JSON to CSV conversion, without installing any 3rd party software. Java file format conversion API allows you to convert your documents and images of any supported file format to any format you need. Quickly convert between more than 50 types of documents and images online like Word, PDF, PowerPoint, Excel, HTML, CAD, raster images, etc.

However, you can either download the APIs JAR file or install API using Maven configurations. Add repository and dependency into your project’s pom.xml file. Below are the steps for Maven:

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>22.10</version>
    <scope>compile</scope>
</dependency>

Please get your Client ID and Secret from the dashboard before following the mentioned steps. Once you have your ID and secret, add code snippet in a Java-based application:

How to Convert CSV to JSON in Java using REST API

Once the installation process is completed, you can jump to the code snippet that changes CSV file to JSON format programmatically. Follow the below mentioned steps:

Upload the File

Firstly, upload the CSV file to the cloud using the code snippet given below:

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

Convert CSV File to JSON in Java

The following steps allow converting the JSON files to CSV format programmatically in Java applications.

  • Firstly, create an instance of the ConvertApi
  • Then, create convert settings instance using ConvertSettings
  • Next, provide the files storage name
  • Set input CSV file path and output format as “json”
  • Then, set the output file path
  • After that, create the ConvertDocumentRequest with ConvertSettings as an argument
  • Finally, convert CSV to JSON by invoking convert_document() with ConvertDocumentRequest

The following code sample shows how to transform CSV to JSON format programmatically in Java:

Finally, the above code snippet will save the JSON file on the cloud. You can see the output in the image below:

How to convert CSV to JSON or JSON to CSV online in Java

Download the Converted File

The above code sample will save the converted csv to json file on the cloud. You can download it using the following code sample:

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

In section, we will see how to convert a JSON file to CSV format programmatically in Java application. Follow the following steps:

  • First, create an instance of the ConvertApi
  • Create convert settings object using ConvertSettings
  • Next, provide the your cloud storage name
  • Set input JSON file path and output format as “csv”
  • Then, set the output file path
  • Now, create the ConvertDocumentRequest with ConvertSettings as an argument
  • Finally, convert JSON to CSV by invoking the convert_document() method with ConvertDocumentRequest

The following code sample demonstrates how to change JSON file to CSV format in Java using REST API:

Finally, the above code sample will save the CSV file on the cloud. Follow already described steps to upload the file and then to download the converted file on the cloud storage.

Free CSV to JSON Converter Online

What is CSV to JSON converter online? Please try the following free online CSV to JSON formatter, which is developed using the Groupdocs.Conversion Cloud APIs.

Online JSON to CSV Converter Free

How to convert JSON into CSV file free? Please try the following free online JSON to CSV converter, which has been developed using the Groupdocs.Conversion Cloud APIs.

Conclusion

This brings us to the end of this blog article, We have learned:

  • how to import CSV to JSON programmatically in java;
  • programmatically upload and download the file from the cloud;
  • how to change JSON to CSV in java programmatically;

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, groupdocs.cloud is writing new blog articles on different file formats conversions using REST API. So, please stay in touch for the latest updates.

Ask a question

You can ask your queries about how to import JSON to CSV or CSV to JSON format, via our forum.

FAQs

How do I convert JSON to CSV in java?

Please follow this link to learn the java code snippet for how to convert JSON to CSV file online easily.

How to install JSON to CSV Java library?

Download and install JSON to CSV converter Java library to transform, manipulate and process files programmatically in Java.

How to convert JSON to CSV using REST API?

Create an instance of ConvertApi, set the values of the convert settings and invoke the convertDocument method with ConvertDocumentRequest to convert nested JSON to CSV, or vice versa.

What is JSON to CSV converter software?

Please use JSON to CSV converter download link to download and install JSON to CSV offline converter for windows.

How do I change CSV to JSON in Java?

Please follow this link to learn the java code sample for how to change CSV file to JSON file quickly and easily.

How do I convert CSV to JSON online for free?

Please use online CSV to JSON file converter to convert CSV to JSON file easily, in seconds.

How to convert CSV to JSON in windows?

Please visit this link to download CSV to JSON offline converter for windows.

How do I convert JSON to CSV file online free?

  • Open our online JSON to CSV converter
  • Click inside the file drop area to upload JSON file or drag & drop JSON file.
  • Click on Convert Now button, online JSON to CSV converter will transform from JSON to CSV.
  • Download link of output file will be available instantly after conversion.

How to online convert JSON to CSV free?

Please use online JSON file to CSV file converter to convert JSON to CSV with a single click, in seconds.

See Also

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