Java Program to Check entered input is Prime Number or Not
A Prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself. It means it is only divisible by 1 and itself, and it start from 2. The smallest prime number is 2.
Here i will show you how to write this program. You can also download below code nad extract file, after extract file you can easily run the program.
SOURCE CODE::
import java.util.Scanner; public class JavaProgram { public static void main(String[] args) { int n,i=2; Scanner sc = new Scanner(System.in); System.out.println("Please Enter any No. : "); n=sc.nextInt(); while(true) { if(n==1) { System.out.println("Smallest Prime number is 2"); break; } if(n%i==0) { break; } else { i++; } } if(n==i) { System.out.println("Prime No."); } else { System.out.println("Not Prime No."); } } }
OUTPUT ::
Please Enter any No. : 97 Prime No. BUILD SUCCESSFUL (total time: 1 second)