package javaapplication3;
import java.io.*;
public class Main {
public static void main(String[] args) {
/*//odczyt z pliku
String tmp,l;
try {
BufferedReader br = new BufferedReader(new FileReader("C:/plik.txt"));
while ((l=br.readLine())!=null)
{tmp=l;}
br.close();
}
catch (IOException ioe){}
//end odczyt
*/

// zapis do pliku
try {
BufferedWriter bw=new BufferedWriter(new FileWriter("C:/plik.txt",true));
bw.write("xx");
bw.newLine();

bw.close();
}
catch(IOException ioe){}
}

//koniec do zapisu
// TODO code application logic here


}