import java.io.BufferedWriter;

import java.io.FileWriter;

import java.io.IOException;

public class DocGhiFile {

    private static final String FILENAME = "data.txt";

    public static void main(String[] args) {

        try (BufferedWriter bw = new BufferedWriter(new FileWriter(FILENAME))) {

            String content = "1234567890\n";

            bw.write(content);

            //Thông báo

            System.out.println("Đã ghi file thành công!!!!");

        } catch (IOException e) {

            e.printStackTrace();

        }

    }

}