CSV Writer 사용 예제

 

package Test;
import java.io.*;
import java.nio.charset.Charset;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.*;

public class CSVFileWriterPrectice {

	public static void main(String[] args) throws IOException {
		Random random = new Random();
		List<List<String>> csvList = new ArrayList<>();
				
		String[] head = new String[] {"이름","나이","성별","주소"};
		csvList.add(Arrays.asList(head));
        
		for(int i=1; i<=100; i++) {
			List<String> newLine = new ArrayList<>();
			newLine.add(String.format("김은수%03d", i));
			newLine.add(Integer.toString(random.nextInt(26)+20));
			newLine.add(random.nextInt(2)==0) ? "남" : "여");
			newLine.add(String.format("부산 해운대구%d", i));
			csvList.add(newLine);
		}
		
		CSVWriter csvWriter = new CSVWriter(csvList);
		csvWriter.writeCSV("myFirstCSV.csv");
		
	}
}
class CSVWriter{
	List<List<String>> csvList = new ArrayList<>();
	public CSVWriter(List<List<String>> csvList) {
		super();
		this.csvList = csvList;
	}
	public void writeCSV(String strName) throws IOException {
		BufferedWriter bufferedWriter = Files.newBufferedWriter(Paths.get(strName), 
				Charset.forName("UTF-8"));
		for(List<String> line : csvList) {
			for(int i=0; i<line.size();i++) {
				bufferedWriter.write(line.get(i));
				if(i != line.size()-1)	bufferedWriter.write(", ");
			}
			bufferedWriter.newLine();
		}
		
		try {
			if(bufferedWriter != null)
				bufferedWriter.close();
		}catch(IOException e) {
			e.printStackTrace();
		}
	}
}