converting string to Integer val

Question

if my String contains 100 digits or 900 digits how can i parse it to Integer value Java.

public static void main(String...args){
    long answer1=-1,answer2=-1;
         


        

Answer 1

Integer's MAX_VALUE is 2,147,483,647. Which is 10 digits.

You can use BigInteger - No Limit, but it depends on your memory and system architecture.

Answer 2

You cannot parse you 900 digits of number into Integer because theoretically, Integer has a minimum value of -2,147,483,648 and a maximum value of 2,147,483,647 (see java docs on Integer)

Big Integer however will fulfill your use case since theoretically it has the range of -2^Integer.MAX_VALUE(2,147,483,647) to +2^Integer.MAX_VALUE(2,147,483,647).

In your code you can just parse the string like this :

BigInteger end = new BigInteger(endNmbr);

and change all long type into BigInteger and you'll good to go.