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POhow to solve numberformatexception and getting input string:""?
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  1. POhow to solve numberformatexception and getting input string:""?
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    copied!<p>I am trying to make a program where The inputs consist of several lines, with the first line indicating the number of succeeding lines of character sequences. These character sequences will be splitted by " ". And the splitted characters will be converted into integer and get its sum.</p> <pre><code> For Example: 2 2 3 4 5 2 3 Sum is 5 4 5 Sum is 9 </code></pre> <p>Now, When I input the same inputs, i get this..</p> <pre><code> 2 2 3 4 5 Sum is 0 2 3 Sum is 5 4 5 Sum is 9 java.lang.NumberFormatException: For input string: "" at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65) at java.lang.Integer.parseInt(Integer.java:504) at java.lang.Integer.parseInt(Integer.java:527) at ITweek.sum2(ITweek.java:33) at ITweek.main(ITweek.java:18) </code></pre> <p>Why do I have a return of Sum is 0? and an error of NumberFormatException: For input string: ""? I don't get it. I don't know how and where to find the answer. Any help will be appreciated. Thank you.</p> <p>This is my code..</p> <pre><code> import java.util.ArrayList; import java.util.List; import java.util.Scanner; public class Prob { public static void main(String args[]){ Scanner input = new Scanner(System.in); int loop = input.nextInt(); String numberString[]=new String[loop+1]; for(int i=0; i&lt;=loop; i++){ String ans = input.nextLine(); numberString[i] = ans; } sum2(numberString); } static void sum2(String []answers){ for(String b : answers){ System.out.print(""+b+" "); String splittedNumber[] = b.split(" "); int sum = 0; for(String j : splittedNumber){ try{ sum=sum+Integer.parseInt(j); }catch(Exception x){ x.printStackTrace(); } } System.out.println("Sum is "+sum); } } } </code></pre>
 

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