import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;

public class FileIO {

    public static void main(String[] args) {
    {
        try {
            File file=new File("input.txt");
            FileInputStream fileInputStream;
            fileInputStream = new FileInputStream(file);
            FileOutputStream fileOutputStream=new FileOutputStream("output.txt");

            while (true)
            {
                int a=fileInputStream.read();
                if ((a==-1))
                    break;
                fileOutputStream.write(a);
            }
            fileInputStream.close();
            fileOutputStream.close();

        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    }
}