使用Java如何自定义一个迭代器

import java.util.Iterator;import java.util.NoSuchElementException;public class AarrayIterator<T> implements Iterable<T>, Iterator<T> {  private final static String[] names = {"rose", "petunia", "tulip"};  public static void main(String[] args) {    AarrayIterator<String> arrayIterator = new AarrayIterator<>(names);    // Java 5,6的方式    for (String s : arrayIterator) {      System.out.println(s);    }    // Java 8的形式    arrayIterator.forEach(System.out::println);  }    protected T[] data;  protected int index = 0;    public AarrayIterator(final T[] data) {    setData(data);  }    public void setData(final T[] d) {    this.data = d;    index = 0;  }    public boolean hasNext() {    return index < data.length;  }    public T next() {    if (hasNext()) {      return data[index++];    }    throw new NoSuchElementException("only " + data.length + " elements");  }  public void remove() {    throw new UnsupportedOperationException("This demo Iterator does not implement the remove method");  }    public Iterator<T> iterator() {    index = 0;    return this;  }}