I need help on a practice code for java

[Sageinquisitor]

import java.util.Scanner;

class Helpful {
	
	public static void main(String args[]) {
		Scanner myScanner = new Scanner(System.in);
		int age;
		double price = 0.00;
		char reply;
		boolean isKid, isSenior, hasCoupon, hasNoCoupon;
		
		System.out.print("How old are you? ");
		age = myScanner.nextInt();
		
		System.out.print("Have a coupon? (Y/N) ");
		reply = myScanner.findInLine(".").charAt(0);

		isKid = age < 12;
		isSenior = age >= 65;
		hasCoupon = reply == 'Y' || reply == 'y';
		hasNoCoupon = reply == 'N' || reply == 'n';
		
		if (!isKid && !isSenior) {
			price = 9.25;
		}
		if (isKid || isSenior) {
			price = 5.25;
		}
		
		if (hasCoupon) {
			price -= 2.00;
		}
		if (!hasCoupon && !hasNoCoupon) {
			System.out.println("Huh?");
		}
		
		System.out.print("Please pay $");
		System.out.print(price);
		System.out.println(".");
		System.out.println("Enjoy the movie!");
	}
}

// below is wat comes up when i hit execute (i type the 34 and hit enter, and the next thing that comes up should make me chose between 'Y' and 'N' but it doesn't)

How old are you? 34
Have a coupon? (Y/N) Exception in thread "main" java.lang.NullPointerException
at Helpful.main(Helpful.java:16)

Process completed.

[Sageinquisitor]

also, i didn't know how to put it on forums without the indents being taken out, so sorry about that.

[JavaBean]

also, i didn't know how to put it on forums without the indents being taken out, so sorry about that.

You just put it inside [code] tag like this: [ code ] your code .. [ / code] (without spaces!)

[Sageinquisitor]

how do i fix wat i have up there?

[JavaBean]

You can try:

String reply = myScanner.nextLine();
if (reply.charAt(0) == 'Y') hasCoupon = true;
else hasCoupon = false;

instead of:

reply = myScanner.findInLine(".").charAt(0);

hasCoupon = reply == 'Y' || reply == 'y';
hasNoCoupon = reply == 'N' || reply == 'n';

[Sageinquisitor]

didn't work, but ty anyway

[Sageinquisitor]

is there any way to get rid of the nullpointerexception? i think that's wat it is

[JavaBean]

reply = myScanner.findInLine(".").charAt(0);

In this line, if findInLine method returns null then calling charAt method of a null object reference will return you a NullPointerException! This is why i suggested you to do that in another way.

[Sageinquisitor]

ooo, i see

[Sageinquisitor]

well, i just took out that line and everything that goes with it with /*-*/ and it still has the nullpointerexception, so im thinking that maybe it isn't the problem

[JavaBean]

Try this:

if (myScanner.findInLine(".") == null) System.out.println("This line is the problem");

[upendarreddy]

reply = myScanner.next().charAt(0);
it workds.
enjoy.

[PhHein]

Congrats! You missed being three years late by only a few days :p