how can i use java scanner in while loop

Question

This is what I have so far:

int question = sc.nextInt(); 

while (question!=1){

    System.out.println(\"Enter The Correct Number ! \");

    int question =         


        

Answer 1

Reuse the question variable instead of redeclaring it.

int question = sc.nextInt(); 
while (question != 1) {
    System.out.println("Enter The Correct Number ! ");
    question = sc.nextInt(); // ask again
}

Answer 2

You are trying to redeclare the variable inside the loop. You only want to give the existing variable a different value:

while (question != 1) {
    System.out.println("Enter The Correct Number ! ");
    question = sc.nextInt();
}

This is just an assignment rather than a declaration.

Answer 3

from my understanding your requirement is to prompt the user again and again until you match the correct number. If this is the case it would as follows: the loop iterates as long as the user enters 1.

Scanner sc = new Scanner(System.in);        
System.out.println("Enter The Correct Number!");
int question = sc.nextInt(); 

while (question != 1) {
    System.out.println("please try again!");
    question = sc.nextInt(); 
}
System.out.println("Success");

Answer 4

you are declaring int question outside the loop and then again inside the loop.

remove the int declaration inside the loop.

In Java the scope of a variable is dependent on which clause it is declare in. If you declare a variable INSIDE a try or a while or many other clauses, that variable is then local to that clause.