java homework please help!

package iterators: 4 import java. util. Iterator import java. util. LinkedList L import java. util. List Iterator that uses a Predicate to filter out elements from the input public class Filter T extends Flat Apply T, T public Filter (Predicate T p Iterator KT inputs) 10 12 13 uses a Predicate to decide whether the input element is output or not 14 private static class EilteringElatApplyFunction implements Flat Apply Function T T KT 16 17 You DO NOT need to define hasNext and next O. Flat Apply provides them already. 18 19 package iterators: 4 import java. util. Iterator import java. util. LinkedList L import java. util. List Iterator that uses a Predicate to filter out elements from the input public class Filter T extends Flat Apply T, T public Filter (Predicate T p Iterator KT inputs) 10 12 13 uses a Predicate to decide whether the input element is output or not 14 private static class EilteringElatApplyFunction implements Flat Apply Function T T KT 16 17 You DO NOT need to define hasNext and next O. Flat Apply provides them already. 18 19