Prime number program in java using scanner
// Prime number program in java using scanner
import java.util.Scanner;
public class PrimeNumberUsingScanner
{
public static void main(String[] args)
{
Scanner sc = new Scanner(System.in);
System.out.println("Please enter a number to check prime number: ");
int number = sc.nextInt();
if(checkPrimeNumber(number))
{
System.out.println(number + " is a prime number");
}
else
{
System.out.println(number + " is not a prime number");
}
sc.close();
}
public static boolean checkPrimeNumber(int number)
{
if(number <= 1)
{
return false;
}
for(int a = 2; a < Math.sqrt(number); a++)
{
if(number % a == 0)
{
return false;
}
}
return true;
}
}