primeChecker.java

import java.io.*;
import java.util.*;
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 number){
        if (number < 2 || (number % 2 == 0 && number != 2)){
            return false;
        }
        else if (number == 2){
            return true;
        }
        else {
            for (int i=2; i <= (number/2); ++i){
                if (number % i == 0){
                    return false;
                }
            }
            return true;
        }
    }
}
public class primeChecker {

	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);
		}
	}
	
}