why are we writing String in the method line (toBinary(int num))??

Question

import java.util.Scanner;

//your code goes here
public class Converter{
public static String toBinary(int num){

String binary="";

while(num>0){
binary=(num%2)+binary;
num/=2;
// return binary;
}

return (binary);
}
//return binary;
}

public class Program {
public static void main(String[ ] args) {

Scanner sc = new Scanner(System.in);

int x = sc.nextInt();

System.out.print(Converter.toBinary(x));
}

Answer 1

raunak j

Because when you convert a long number to binary then it will exceed the size of integer so in this case you may get exception.

Answer 2

raunak j

Here you can see the difference. Just try to enter 10000

https://code.sololearn.com/c028X8jjREUY/?ref=app

Answer 3

Ok