learning java FileWriter

import java.io.FileWriter;

import java.io.IOException;

public class FileWriterTest {

    public static void main(String[] args) {

        try {

            var fw = new FileWriter("pop.txt");

            {

                fw.write("11111\r\n");

                fw.write("11111\r\n");

                fw.write("11111\r\n");

                fw.write("11111\r\n");

                fw.write("11111\r\n");

            }

            fw.close();

        } catch (IOException e) {

            e.printStackTrace();

        }

    }

}