import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.BufferedReader;
import java.io.OutputStreamWriter;
import java.util.Scanner;
import java.io.BufferedWriter;

public class Main {

    static BufferedReader input;
    static BufferedWriter output;
    public static void main(String[] args  ) {



        try {
        File f = new File("student.txt");
        FileInputStream fis = new FileInputStream(f);
        InputStreamReader isr = new InputStreamReader(fis);
        input = new BufferedReader(isr);

        char choice = 'R' ;
        boolean access = false;

        File file2 = new File("student2.txt");
        if(file2.exists()) {
            System.out.println("The File Already Exists in The Directory , Please Enter A To Append or R to rewrite");
            choice = (char)System.in.read();

        }

        access = (choice == 'A')?true:false;
        System.out.println(choice);
        System.out.println(access);
        FileOutputStream fos = new FileOutputStream(file2,access);
        OutputStreamWriter osw  = new OutputStreamWriter(fos);
         output = new BufferedWriter(osw);

        while(input.ready()) {
            String s = input.readLine();
            String [] lines = s.split(",");

            for (int i = 0; i < lines.length; i++) {
                output.write(lines[i]);
                output.newLine();
            }
        }

        }

        catch(IOException e) {
            System.out.println(e);
        }

        finally {
            try {
            input.close();
            output.close();

            }
            catch(IOException e) {
                System.out.println(e);
            }
        }



}
}