Как создать csv файл в Java?

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import java.io.FileWriter;
import java.io.IOException;

public class CreateCSV {
    public static void main(String[] args) {
        String fileName = "example.csv";
        String[] data = {"line1", "line2", "line3"};

        try {
            FileWriter writer = new FileWriter(fileName);

            for (String str : data) {
                writer.append(str).append(',');
            }

            writer.flush();
            writer.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

1

line1,line2,line3,

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import java.io.FileWriter;
import java.io.IOException;

public class CreateCSV {
    public static void main(String[] args) {
        String fileName = "example.csv";
        String[] data = {"line1", "line2", "line3"};

        try {
            File

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import com.opencsv.CSVWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;

public class Main {
    public static void main(String[] args) {
        String[] header = {"Name", "Email", "Phone"};
        String[] data1 = {"John Doe", "[email protected]", "1234567890"};
        String[] data2 = {"Jane Doe", "[email protected]", "0987654321"};
        File file = new File("contacts.csv");

        try (FileWriter outputfile = new FileWriter(file);
             CSVWriter writer = new CSVWriter(outputfile)) {
            writer.writeNext(header);
            writer.writeNext(data1);
            writer.writeNext(data2);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}