JAVA - vstup

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

import java.io.*;

public class FormatovanyVstup {
  public static void main(String[] args) throws IOException {
     FileReader fr = new FileReader("vstup.txt");
     BufferedReader in = new BufferedReader(fr);
    String riadok;
    int k, suma = 0;

    while((riadok = in.readLine()) != null) {
      k = Integer.valueOf(riadok).intValue();
      suma += k;
    }

    System.out.println("Sucet je: " + suma);
    fr.close();
  }
}

import java.io.IOException;

public class test {
   public static void main(String[] args) throws IOException {
      byte[] vstup = new byte[255];
      System.out.print("zadaj vstup:");
      int cnt = System.in.read(vstup);
        System.out.print(new String(vstup).substring(0, cnt));
   }

}