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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 true;
    }
    else if(number < 2) {
      return false;
    }
    for(int i = 2; i < number; i++) {
      if (number % i == 0) {
        return false;
      }
      else {
        return true;
      }
    }
        return true;
      }
  
  public ArrayList<Integer> onlyPrimes(int[] numbers) {
    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, 33, 11, 100, 101, 43, 89};
    System.out.println(pd.onlyPrimes(numbers));
  }
}