Convert CSV to JSON and JSON to CSV in Java

Convert_JSON_to_CSV_in_Java.java

package com.groupdocsdev.classes;

import com.groupdocs.cloud.conversion.api.*;
import com.groupdocs.cloud.conversion.model.*;
import com.groupdocs.cloud.conversion.model.requests.*;
import com.groupdocs.cloud.conversion.client.Configuration;
import com.groupdocs.cloud.conversion.client.ApiException;
import java.util.List;

// How to Convert JSON to CSV File in Java using REST API.
public class App {

  public static void main(String[] args) {
    
    // Create an instance of the convert API
    ConvertApi apiInstance = new ConvertApi(configuration);
          
    try {
       
      // Prepare convert settings
      ConvertSettings settings = new ConvertSettings();
      settings.setStorageName(MyStorage);
      settings.setFilePath("java-testing/input-sample-file.json");
      settings.setFormat("csv");
      
      settings.setOutputPath("java-testing/output-sample-file.csv");
    
      // convert to specified format
      List<StoredConvertedResult> response = apiInstance.convertDocument(new ConvertDocumentRequest(settings));
      System.out.println("Document converted successfully: " + response);
      
    } catch (ApiException e) {
      System.err.println("Exception while calling Java API: ");
      e.printStackTrace();
    }
  }
}

Convert_Large_CSV_to_JSON_Online_in_Java.java

package com.groupdocsdev.classes;

import com.groupdocs.cloud.conversion.api.*;
import com.groupdocs.cloud.conversion.model.*;
import com.groupdocs.cloud.conversion.model.requests.*;
import com.groupdocs.cloud.conversion.client.Configuration;
import com.groupdocs.cloud.conversion.client.ApiException;
import java.util.List;

// How to Convert CSV to JSON in Java using REST API.
public class App {

  public static void main(String[] args) {
    
    // Create an instance of the convert API
    ConvertApi apiInstance = new ConvertApi(configuration);
          
    try {
       
      // Prepare convert settings
      ConvertSettings settings = new ConvertSettings();
      settings.setStorageName(MyStorage);
      settings.setFilePath("java-testing/input-sample-file.csv");
      settings.setFormat("json");
      
      settings.setOutputPath("java-testing/output-sample-file.json");
    
      // convert to specified format
      List<StoredConvertedResult> response = apiInstance.convertDocument(new ConvertDocumentRequest(settings));
      System.out.println("Document converted successfully: " + response);
      
    } catch (ApiException e) {
      System.err.println("Exception while calling Java API: ");
      e.printStackTrace();
    }
  }
}

Download_Convert_CSV_to_JSON_Array_in_Java.java

package com.groupdocsdev.classes;

import com.groupdocs.cloud.conversion.api.*;
import com.groupdocs.cloud.conversion.model.requests.*;
import com.groupdocs.cloud.conversion.client.Configuration;
import com.groupdocs.cloud.conversion.client.ApiException;

import java.io.File;

// Download File from the Cloud Storage in Java
public class App {

  public static void main(String[] args) {
        
    // Create an instance of the convert API          
    FileApi apiInstance = new FileApi(configuration);
    try {
      DownloadFileRequest request = new DownloadFileRequest("java-testing\\output-sample-file.json", MyStorage, null);
      File response = apiInstance.downloadFile(request);
      System.err.println("Expected response type is File: " + response.length());
    } catch (ApiException e) {
      System.err.println("Exception while calling FileApi:");
      e.printStackTrace();
    }
    
  }
}

JSON_and_CSV_Conversion_in_Java.md

You can transform CSV to JSON and JSON to CSV online programmatically on the cloud. In this article, you will learn how to convert CSV to JSON and JSON to CSV in Java.

The following topics are covered in this article:

1. Java CSV to JSON and JSON to CSV Converter API - Installation
2. How to Convert CSV to JSON in Java using REST API
3. How to Convert JSON to CSV File in Java using REST API

Read the complete article on how to convert CSV to JSON and JSON to CSV in Java: https://blog.groupdocs.cloud/2022/11/21/convert-csv-to-json-and-json-to-csv-in-java/

Upload_to_Convert_CSV_to_JSON_Online_in_Java.java

package com.groupdocsdev.classes;

import com.groupdocs.cloud.conversion.api.*;
import com.groupdocs.cloud.conversion.model.*;
import com.groupdocs.cloud.conversion.model.requests.*;
import com.groupdocs.cloud.conversion.client.Configuration;
import com.groupdocs.cloud.conversion.client.ApiException;

import java.io.File;

// Upload File to Cloud Storage using Java
public class App {

  public static void main(String[] args) {
        
    // Create an instance of the convert API          
    FileApi apiInstance = new FileApi(configuration);
    try {
      File fileStream = new File("H:\\groupdocs-cloud-data\\input-sample-file.csv");
      UploadFileRequest request = new UploadFileRequest("java-testing\\input-sample-file.csv", fileStream, MyStorage);
      FilesUploadResult response = apiInstance.uploadFile(request);
      System.out.println("Expected response type is FilesUploadResult: " + response.getUploaded().size());
    } catch (ApiException e) {
      System.err.println("Exception while calling FileApi:");
      e.printStackTrace();
    }
    
  }
}

Utils_for_JSON_and_CSV_Converter_Online_in_Java.java

# Get your client_id and client_secret from https://dashboard.groupdocs.cloud after free registration.

String ClientId = "xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx";
String ClientSecret = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
String MyStorage = "test-internal-storage";
Configuration configuration = new Configuration(ClientId, ClientSecret);