Prime number

public class PrimeNumber {

public static void main(String[] args) {
// TODO Auto-generated method stub
// Prime number
int num = 13;
int i=2;
int temp=num;
boolean isPrime=true;

System.out.println("// Prime number");
while(i<num-1)
{
if(num%i==0)
{
isPrime=false;
break;
}
i++;
}
if(isPrime == false)
{
System.out.println("Number not a prime number");
}
else
{
System.out.println("Number is Prime number");
}
}
}

Output: