java program to check number is prime number or not

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2. Core Java
3. Basic java programs
4. Prime Number

package com.javabasic.validateprimenumber;
import java.util.Scanner;
public class ValidatePrimeNumber {
 public static void main(String[] args) {
  int input;
  int isPrime = 0;
  System.out.println("Enter a number to check prime number or not ");
  Scanner scanner = new Scanner(System.in);
  input = scanner.nextInt();
  for (int i = 2; i <= input / 2; i++) {
   if (input % i == 0) {
    isPrime = 1;
    System.out.println(input + "---is not a prime number");
    break;
   }
  }
  if (isPrime == 0)
   System.out.print(input + "---is a prime number ");
 }
}