Java - Finding out if a number is prime or not? (beginner)

i only really just started a java course, the task we have been set is to write a code that will output whether a number is prime or not.

public class PrimeNumbers2 {
public static void main(String[] args) {
    int number = 9;
    int count = 2;
    Boolean prime = true;

    if (number % count == 0) {
        prime = true;
    }
    else {

        for (count = count + 1) {

        if (count + 1>= number) {
            prime = false;
        }
        else
        {
            prime =  false;
        }

    }
    if (prime == true)
    {
        System.out.println("Number is prime");
    }
     else
    {
        System.out.println("number is not prime");
    }




}}}

This is what I have come up with so far, but comes up with a lot of errors, i have searched for a lot of answers but they all say to use code lines that we haven't learnt about before, any help would be appreciated