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Why this code not working here and throw NoSuchElementException?

import java.util.Scanner; public class Program { public static void main(String[] args) { Scanner in=new Scanner(System.in); System.out.println("Insert Number"); while(!in.hasNextInt()){ System.out.println("Invalid Input"); System.out.println("Insert Number"); in.next(); } in.nextInt(); } }

23rd Jan 2017, 4:43 PM
Vernando Abang
Vernando Abang - avatar
1 Answer
+ 2
your problem is that you call in.next() inside your while(!in.hasNextInt()). itÂŽs like you want to eat an apple but there are no apples left. a possible solution e.g.: is import java.util.Scanner; public class Program { public static void main(String[] args) { System.out.println("Insert Number"); Scanner in = new Scanner(System.in); while (in.hasNext()) { String text = String.valueOf(in.nextInt()); System.err.println(text); } } }
23rd Mar 2017, 1:55 PM
T0nd3