Back scanner reading after user error - java

Question

I have read user input that must be only of type int, the problem comes when the user enters letter instead of a int. I know how to handle the exception, but I would like to

Answer 1

A loop is the right idea. You just need to mark a success and carry on:

boolean inputOK = false;
while (!inputOK) {
    try{
        System.out.print("enter number: ");

        numAb = tastiera.nextInt();

        // we only reach this line if an exception was NOT thrown
        inputOK = true;
    } catch(InputMismatchException e) {
        // If tastiera.nextInt() throws an exception, we need to clean the buffer
        tastiera.nextLine(); 
    }
}