Java System.in read console input String and convert to int

Introduction

The following program sums a list of numbers entered by the user.

It converts the string representation of each number into an int using parseInt(). 

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

public class Main {
  public static void main(String args[]) throws IOException {
    // create a BufferedReader using System.in
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    String str;// www.j a  v  a2  s.c o  m
    int i;
    int sum = 0;

    System.out.println("Enter numbers, 0 to quit.");
    do {
      str = br.readLine();
      try {
        i = Integer.parseInt(str);
      } catch (NumberFormatException e) {
        System.out.println("Invalid format");
        i = 0;
      }
      sum += i;
      System.out.println("Current sum is: " + sum);
    } while (i != 0);
  }
}



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