Create BufferedReader from InputStreamReader : InputStreamReader « File Input Output « Java

1. Java
2. File Input Output
3. InputStreamReader

Create BufferedReader from InputStreamReader

 
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import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Standard {

  public static void main(String args[]) throws IOException {
    BufferedReader cin = new BufferedReader(new InputStreamReader(System.in));
    String number;
    int total = 0;

    while ((number = cin.readLine()) != null) {
      try {
        total += Integer.parseInt(number);
      } catch (NumberFormatException e) {
        System.err.println("Invalid number in input");
        System.exit(1);
      }
    }
    System.out.println(total);
  }
}

   
  

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