how to input a BigInteger type in java

Question

when I tried to get an input of type Integer, what I only needed to do was the code below.

Scanner sc = new Scanner(System.in);
int N = sc.nextInt();
         


        

Answer 1

Make sure you prepare to catch an exception from the BigInteger - if the scanner fails to find a string you might get a BigInteger with non integer characters and it'll throw an exception.

Scanner scanner = new Scanner(fileOrOther);
try{
     BigInteger bigint = scanner.nextBigInteger();
} catch(NumberFormatException ex) {
//handle Code here
}