Determining Prime Numbers Java

Determining Prime Numbers Java

I am writing a program that takes as input an integer, and outputs a
message whether the integer entered is prime or not. The algorithm I am
using is as follows... Require: n>0, Require: isPrime <- true, for i=2 to
sqrt(n) do, if n%i=0 then isPrime <- false end if and end for Then Print
whether the number is Prime or not. Here is my code so far, the code is
not working and I am not able to find the problem.
public static void main(String[] args) {
Scanner kb = new Scanner(System.in);
int n;
System.out.println("Input a positive integer");
n = kb.nextInt();
while (n>0){
boolean isPrime = true;
for (int i =2; i <= n/2;i++){
if(n % i == 0){
isPrime = false;
break;
}
}
if (isPrime = true){
System.out.println("The integer, " + n + ", is a prime");
break;
}
else{
System.out.println("The integer, " + n + ", is not a prime");
break;
}
}
}
}
I would be grateful if someone could help, Thanks!