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();
}