How to read array of integers from the standard input in Java?

Question

in one line from the standard input I have 3 types of integers: the first integer is id, the second integer is N - some number, and after that follows N integers, separeted

Answer 1

Use Scanner and method hasNextInt()

Scanner scanner = new Scanner(System.in);

while (scanner.hasNext()) {

     if (scanner.hasNextInt()) {
        arr[i]=scanner.nextInt();
        i++;
     }
  }