Prime Checker.java

/* *
* Author: Tonmoy Mondal
* URL: https://qinetique.github.io
* */

/*JAVA-15*/

import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;
import java.lang.reflect.*;

import static java.lang.System.in;

class Prime{
    void checkPrime(int ... numbers){
        for (int num : numbers){
            if (isPrime(num)){
                System.out.print(num + " ");
            }
        }
        System.out.println();
    }
    boolean isPrime(int n){
        if (n < 2){
            return false;
        }
        else if (n == 2) {
            return true;
        }
        else if (n % 2 == 0){
            return false;
        }
        int root = (int) Math.sqrt(n);
        for (int i = 3; i <= root; i += 2){
            if (n % i == 0){
                return false;
            }
        }
        return true;
    }
}

public class Solution {

    public static void main(String[] args) {
        try{
            BufferedReader br=new BufferedReader(new InputStreamReader(in));
            int n1=Integer.parseInt(br.readLine());
            int n2=Integer.parseInt(br.readLine());
            int n3=Integer.parseInt(br.readLine());
            int n4=Integer.parseInt(br.readLine());
            int n5=Integer.parseInt(br.readLine());
            Prime ob=new Prime();
            ob.checkPrime(n1);
            ob.checkPrime(n1,n2);
            ob.checkPrime(n1,n2,n3);
            ob.checkPrime(n1,n2,n3,n4,n5);
            Method[] methods=Prime.class.getDeclaredMethods();
            Set<String> set=new HashSet<>();
            boolean overload=false;
            for(int i=0;i<methods.length;i++)
            {
                if(set.contains(methods[i].getName()))
                {
                    overload=true;
                    break;
                }
                set.add(methods[i].getName());

            }
            if(overload)
            {
                throw new Exception("Overloading not allowed");
            }
        }
        catch(Exception e)
        {
            System.out.println(e);
        }
    }

}