how to create a CSV file in Java

Question

can you tell me how to create a CSV file in Java?

Answer 1

Using OpenCSV Library

Add OpenCSV dependency (if using Maven):

<dependency>

    <groupId>com.opencsv</groupId>

    <artifactId>opencsv</artifactId>

    <version>5.5.2</version>

</dependency>

Write CSV using OpenCSV:

import com.opencsv.CSVWriter;

import java.io.FileWriter;

import java.io.IOException;

public class OpenCSVWriter {

    public static void main(String[] args) {

        String fileName = "data.csv";

        try (CSVWriter writer = new CSVWriter(new FileWriter(fileName))) {

            String[] header = {"ID", "Name", "Age"};

            String[] row1 = {"1", "John", "25"};

            String[] row2 = {"2", "Emma", "30"};

            String[] row3 = {"3", "Michael", "22"};

            writer.writeNext(header);

            writer.writeNext(row1);

            writer.writeNext(row2);

            writer.writeNext(row3);

            System.out.println("CSV file created successfully.");

        } catch (IOException e) {

            e.printStackTrace();

        }

    }

}