how to check if number prime in java
public class PrimeNumberInJava { public static void main(String[] args) { int a, b = 0, flag = 0; int number = 17; b = number / 2; if(number == 0 || number == 1) { System.out.println(number + " is not prime number"); } else { for(a = 2; a <= b; a++) { if(number % a == 0) { System.out.println(number + " is not prime number."); flag = 1; break; } } if(flag == 0) { System.out.println(number + " is prime number."); } } } }
