*NOTE:The functionality of this interface is duplicated by the Iterator * interface. In addition, Iterator adds an optional remove operation, and * has shorter method names. New implementations should consider using * Iterator in preference to Enumeration. * *@seejava.util.Iterator *@seejava.io....
所以我们必须要给它加上一个iterator()方法,使其可以返回一个实现Iterator<E>的interface。所以我们定义一个ArrayIterator类,作为ArrayList的内部类。将迭代器作为内部类实现的优势是它可以直接访问容器列表的private元素。 实现代码如下,iterator方法返回一个ArrayIterator实例。每个迭代器都会维护一个字段j来代表下一个被...
package java.util; publicinterface Iterator<E> { boolean hasNext(); E next(); void remove(); } 对于这三个方法所实现的功能,字面意义就是了。不过貌似对迭代器的工作“过程”还是迷雾,接下来 我们以一个实际例子来看。 List<String> list =new ArrayList<String>(); list.add("TEST1"); list.add("...
Namespace: Java.Util Assembly: Mono.Android.dll An iterator over a collection. C# Kopiera [Android.Runtime.Register("java/util/Iterator", "", "Java.Util.IIteratorInvoker")] [Java.Interop.JavaTypeParameters(new System.String[] { "E" })] public interface IIterator : Android.Runtime....
Note that the #remove and #set(Object) methods are not defined in terms of the cursor position; they are defined to operate on the last element returned by a call to #next or #previous(). This interface is a member of the Java Collections Framework....
This interface is a member of theJava Collections Framework. Added in 1.2. Java documentation forjava.util.Iterator. Portions of this page are modifications based on work created and shared by theAndroid Open Source Projectand used according to terms described in theCreative Commons 2.5 Attribution...
This interface is a member of theJava Collections Framework. Added in 1.2. Java documentation forjava.util.Iterator. Portions of this page are modifications based on work created and shared by theAndroid Open Source Projectand used according to terms described in theCreative Commons 2.5 Attribution...
Methods in java.util that return ListIterator Modifier and Type Method Description static <T> ListIterator<T> Collections.emptyListIterator() Returns a list iterator that has no elements. ListIterator<E> AbstractList.listIterator() Returns a list iterator over the elements in this list (in p...
public interfaceIterator<E> An iterator over a collection.Iteratortakes the place ofEnumerationin the Java Collections Framework. Iterators differ from enumerations in two ways: Iterators allow the caller to remove elements from the underlying collection during the iteration with well-defined semantics....
java迭代Iterator详解 一、Iterator的API 关于Iterator主要有三个方法:hasNext()、next()、remove() hasNext:没有指针下移操作,只是判断是否存在下一个元素 next:指针下移,返回该指针所指向的元素 remove:删除当前指针所指向的元素,一般和next方法一起用,这时候的作用就是删除next方法返回的元素...