Java Program to accept any integer number and print its length

The following code is to get the total length or total number of number(s) entered, at once, by the user.
Code:-

import java.util.*;
public class IntegerToString{
    Scanner scan=new Scanner(System.in);
    int number;
    String string;
    public void input(){
        try{
            System.out.println("Enter any number: ");
            number=scan.nextInt();
        }
        catch(NumberFormatException e){
            System.out.println("Error Code: "+e);
            System.exit(0);
        }
    }

    public void compute(){
        string=Integer.toString(number);
        int length=string.length();
        System.out.println("The length of Number \""+number+"\" is: "+length);
    }

    public static void main(String[] args){
        IntegerToString obj=new IntegerToString();
        obj.input();
        obj.compute();
    }
}

Output:-
Enter any number:
12345
The length of Number "12345" is: 5