java beginner script problem

[kong]

Hello
I am a beginner with java and i have a little script problem. I want my program to end its calculations when you add a non integer.

Can someone please help. I got it to the stage where if you enter 0 it will end. It should actually be if you enter a non integer than the program should end.

Kind regards
---------------------

package oving1;
//import java.util;
import java.util.Scanner;

public class Sum {
//main methord
public static void main(String[] args) {
//create scanner
Scanner input = new Scanner(System.in);

//read an initial data
System.out.print("Enter an int value(the program exits if the input is not integer): ");
int data = input.nextInt();

//keepreading data until input 0
int sum = 0;
while (data != 0)
{
sum += data;

//read next data
System.out.print(
"Enter an int value(the program exits if the input is not integer): ");
data = input.nextInt();
}

System.out.println("The sum is " + sum);
}

}

[sumit1001]

A simple way of handling: -
use input.next() and try to typecast into a int and then if it throws NumberFormatException than just exit the programme.

Better way of identifying the characters: -
use regular expressions and find out if there is any character in the String.

[kong]

Thanks for the reply.
I got the answer today in class. If anyone is interested here is the script.

----------------------

package oving1;

import java.util.Scanner;

public class Sum {
//main methord
public static void main(String[] args) {
//create scanner
Scanner input = new Scanner(System.in);

//read an initial data
System.out.print("Enter an int value(the program exits if the input is not integer): ");


//String string = input.next();

//keepreading data until input 0
int sum = 0;
while (input.hasNextInt())
{
int data = input.nextInt();
sum += data;

//read next data
System.out.print(
"Enter an int value(the program exits if the input is not integer): ");
}

System.out.println("The sum is " + sum);
}

}

[manwithshades]

I didn't know about the Scanner class. I guess you learn something new everyday.

[htmlguy]

Might've been a bit less cluttered if you used a do-while, but that'll do the trick.