Csvの中身を読み取って書き出すシンプルなプログラム。練習用だよ。

Csv.java

import java.io.*;
import org.apache.commons.csv.CSVRecord;
import org.apache.commons.csv.CSVFormat;

public class Csv{
	public static void main(String[] args){
		try{
			String homeDir = System.getenv("HOME");
			Reader reader = new FileReader(homeDir + "/dev/lrn/java/file/read.csv");
			FileWriter writer = new FileWriter(homeDir + "/dev/lrn/java/file/write.csv");
			
			Iterable<CSVRecord> records = CSVFormat.RFC4180.withHeader().parse(reader);

			for(CSVRecord rc : records){
				writer.write(rc.get("Name"));
			}
			
			reader.close();
			writer.flush();
			writer.close();
		}catch(IOException e){
			System.out.println(e);
		}
	}
}