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PrimeDirective.java

// Import statement:
import java.util.ArrayList;

class PrimeDirective {
  
  // Add your methods here:
  public boolean isPrime(int number){
    if (number == 2) {
      return false;
    } else if (number < 2) {
      return true;
    }
   for (int i = 2;i < number; i++){ 
    if (number % i == 0){
      return false;
      
    } else {
      return true;
    }
  }
} //missing return statement!!!
  
  public ArrayList<Integer> onlyPrimes(int[] numbers) {
    // method body goes here
    ArrayList<Integer> primes = new ArrayList<Integer>();
  
  for (int number : numbers){
    if (isPrime(number)){
      primes.add(number);
    }
  }
  return primes;
}

 public static void main(String[] args) {

    PrimeDirective pd = new PrimeDirective();
    int[] numbers = {6, 29, 28, 33, 11, 100, 101, 43, 89};
System.out.println(pd.isPrime(7));
System.out.println(pd.isPrime(28));
System.out.println(pd.isPrime(2));
System.out.println(pd.isPrime(0));

System.out.println(pd.onlyPrimes(numbers));
  }
}