I am trying to get a While loop for user input to check if it is a number and not a letter.
System.out.println("Enter Student ID");
while(!scanner.hasNextInt()) {
System.out.println("Input is not a number. Enter a Number:");
scanner.nextLine();
}
int id = scanner.nextInt();
what it prints out;
Enter Student ID
j
Input is not a number.Enter a Number:
Input is not a number.Enter a Number:
if I enter another letter a second time ;
Enter Student ID
j
Input is not a number.Enter a Number:
Input is not a number.Enter a Number:
j
Input is not a number.Enter a Number:
This issue;
So it is working but on the first go around it prints "Input is not a number.Enter a Number:" twice... i cannot figure out why and then there after once ( as expected)...
The expected result should be ;
Enter Student ID
j
Input is not a number.Enter a Number:
x
Input is not a number.Enter a Number:
y
Input is not a number.Enter a Number:
