[Solved] How to handle wrong user input [closed]

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If you are using scanner, you can use the nextInt() method with the condition hasNextInt() which would only read integer inputs. Have a look at this post for example:

Taken from the above mentioned post.

Scanner sc = new Scanner(System.in);
System.out.print("Enter number 1: ");
while (!sc.hasNextInt()) sc.next();
int num1 = sc.nextInt();
int num2;
System.out.print("Enter number 2: ");
do {
    while (!sc.hasNextInt()) sc.next();
    num2 = sc.nextInt();
} while (num2 < num1);
System.out.println(num1 + " " + num2);

Also you can look at the documentation for scanner’s nextInt() here

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solved How to handle wrong user input [closed]