/** An instance of this class classifies as RED any integer whose absolute
**  value is prime and classifies as BLUE any integer whose absolute
**  value is non-prime (i.e., composite).
**
**  @author R. McCloskey
**  @author <your name>
**  @version October 2007
*/

public class PrimeCompositeClassifier implements RedBlueClassifierOfInt {

   /** Returns true iff the absolute value of the specified number is prime.
   **  @return true iff the absolute value of the specified number is prime
   **  @param k the number whose absolute value is to be tested for primality
   */
   public boolean isRed(int k) {

      ..... missing code .....

   } 


   /** Returns true iff the absolute value of the specified number is 
   **          composite (i.e., non-prime).
   **  @return true iff the absolute value of the specified number is 
   **          composite (i.e., non-prime).
   **  @param k the number whose absolute value is to be tested for
   **           compositeness
   */
   public boolean isBlue(int k) { 

      ..... missing code .....

   }

}