Iterator filtrujący - The method is undefined for the type

Question

@SuppressWarnings("hiding")
public interface Predicate <Student> {
     boolean accept(Student stud);   
        }

import java.util.function.Predicate;

public class StudRok implements Predicate <Student> {
    public boolean accept(Student stud) {
        return stud.getRok() == 2;
    }

    @Override
    public boolean test(Student t) {
        return false;
    }
}

W mainie:

@SuppressWarnings("rawtypes")
        Iterator <Student> iterRok = new FilteredIterator(Studenci.iterator(), new StudRok());
        wyswietl(iterRok);

A tu jest błąd:

import java.util.Iterator;
import java.util.function.Predicate;

@SuppressWarnings("hiding")
public final class FilteredIterator<Student> implements Iterator<Student>{

    private Iterator<Student> iterator;
    private Predicate<Student> predicate;

    private Student stud=null;
    private boolean bHasNext=true;

    public FilteredIterator(Iterator<Student> iterator, Predicate<Student> predicate) {
        super();
        this.iterator = iterator; 
        this.predicate = predicate;
        findNextValid();
    }

    @SuppressWarnings("unchecked")
    private void findNextValid() {
        while (iterator.hasNext()) {
            stud = iterator.next();
            if ((predicate).accept(stud)) {
                return;
            }
        }
        bHasNext=false;
        stud=null;
    }

    @Override
    public boolean hasNext() {
        return bHasNext;
    }

    @Override
    public Student next() {
        Student nextValue = stud;
        findNextValid();
        return nextValue;
    }
}

Błąd jest tutaj: if ((predicate).accept(stud)) {

Błąd: The method accept(Student) is undefined for the type Predicate<student>

Co robię źle?

Answer 1

Masz dokladnie napisane java.util.function.Predicate nie zawiera w sobie metody accept