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From: Knute Johnson <nospam@rabbitbrush.frazmtn.com>
Newsgroups: comp.lang.java.help
Subject: Re: need help with my code
Date: Mon, 12 Dec 2016 15:16:08 -0600
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On 12/12/2016 10:19, Karim omar wrote:
> when i use the (reply = myScanner.findInLine(".").charAt(0);) method i get the following error message
>
> Exception in thread "main" java.lang.NullPointerException
>         at Ifexercise1a.main(Ifexercise1a.java:18)
>
> and i am sure i wrote it write cause i tried copying and paste it from another prog which is working fine, i am using eclipse and i don`t know if it`s a bug in eclipse or something wrong in the class itself.
>
> the complete code is
>
> import java.util.Scanner;
>
> public class Ifexercise1a {
>
>         public static void main(String[] args) {
>
>                 Scanner myScanner = new Scanner(System.in);
>                 int age;
>                 double price;
>                 char reply;
>
>                 System.out.println("how old are you?");
>                 age = myScanner.nextInt();
>
>                 System.out.println("you have a coupon? (Y/N)");
>                 reply = myScanner.findInLine(".").charAt(0);
>
>                 if(age <= 12 || age > 65){
>                         price = 5.25;
>                 }else{
>                         price = 9.25;
>                 }
>             if (reply == 'y' || reply == 'Y'){
>                     price-=2.00;
>             }
>                   System.out.println("you will pay $" + price);
>                 }
>
>
> }
>

I'm not sure what you are trying to do with the line 'reply = 
myScanner.findInLine(".").charAt(0)' but if you replace the 
.findInLine() with .next() it will work fine.

-- 

Knute Johnson