**Why do they add 4th and 5th together instead of individually? **

Shouldn't the result of such a task include 5 lines of solution instead of 4?

ob.checkPrime(n1); ob.checkPrime(n1,n2); ob.checkPrime(n1,n2,n3); ob.checkPrime(n1,n2,n3,n4,n5);

**Why they did it like that? **

For me better will be sth like this: import java.util.*;

public class Solution {

public static void main(String[] args) {
   Prime prime = new Prime();
    prime.checkPrime();


}

}

class Prime{

public static void checkPrime(){
    Scanner scanner = new Scanner(System.in);
    int number;
    int divisors =2;
    ArrayList<String> primeList = new ArrayList<>();

    for(int i=0;i<5;i++){
        number=scanner.nextInt();
        for(int j=2;j<=Math.sqrt(number);j++){
            if(number%j==0){
                divisors++;
            }
        }
        if(divisors==2&&number!=1){
            primeList.add(String.valueOf(number));
        }
        divisors=2;
        System.out.println(String.join(" ",primeList));
    }

}

}