Java의 OpenCSV를 사용하여 CSV 파일 읽기 및 쓰기

import com.opencsv.CSVReader;
import java.io.FileReader;
import java.io.IOException;

public class CSVReaderExample {
    public static void main(String[] args) {
        try {
            CSVReader reader = new CSVReader(new FileReader("data.csv"));
            String[] line;
            while ((line = reader.readNext()) != null) {
                // 处理每一行数据
                for (String field : line) {
                    System.out.print(field + ", ");
                }
                System.out.println();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

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

public class CSVWriterExample {
    public static void main(String[] args) {
        try {
            CSVWriter writer = new CSVWriter(new FileWriter("output.csv"), ',', CSVWriter.NO_QUOTE_CHARACTER);
            String[] header = {"Name", "Age", "Email"};
            writer.writeNext(header);
            String[] row1 = {"John Doe", "30", "john.doe@example.com"};
            String[] row2 = {"Jane Smith", "25", "jane.smith@example.com"};
            writer.writeNext(row1);
            writer.writeNext(row2);
            writer.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}