java iterator

ArrayDeque類(lèi)iterator()方法 (ArrayDeque Class iterator() method)

• iterator() Method is available in java.lang package.

  iterator()方法在java.lang包中可用。

• iterator() Method is used to return an iterator over the deque elements.

  iterator()方法用于在雙端隊(duì)列元素上返回迭代器。

• iterator() Method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.

  iterator()方法是一個(gè)非靜態(tài)方法，只能通過(guò)類(lèi)對(duì)象訪問(wèn)，如果嘗試使用類(lèi)名稱(chēng)訪問(wèn)該方法，則會(huì)收到錯(cuò)誤消息。

• iterator() Method does not throw an exception at the time of returning the Iterator.

  返回迭代器時(shí)，iterator()方法不會(huì)引發(fā)異常。

Syntax:

句法：

public Iterator<T> iterator();

Parameter(s):

參數(shù)：

• It does not accept any parameter.

  它不接受任何參數(shù)。

Return value:

返回值：

The return type of the method is Iterator<T>, it returns an iterator over the deque elements.

該方法的返回類(lèi)型為Iterator <T> ，它在雙端隊(duì)列元素上返回一個(gè)迭代器。

Example:

例：

// Java program to demonstrate the example // of Iterator<T> iterator() method of ArrayDeque import java.util.*;public class IteratorOfArrayDeque {public static void main(String[] args) {// Creating an ArrayDeque with initial capacity of// storing elementsDeque < String > d_queue = new ArrayDeque < String > (10);// By using add() method to add elements// in ArrayDequed_queue.add("C");d_queue.add("C++");d_queue.add("Java");d_queue.add("Php");d_queue.add("DotNet");System.out.println();// Display Deque ElementsSystem.out.println("d_queue before iterator() : ");System.out.println("ArrayDeque Elements = " + d_queue);System.out.println();// By using iterator() method to iterate the// elements in same order as ArrayDequeSystem.out.println("d_queue after iterator(): ");// Display Deque Elementsfor (Iterator iter = d_queue.iterator(); iter.hasNext();)System.out.println("Deque Elements : " + iter.next());} }

Output

輸出量

d_queue before iterator() : ArrayDeque Elements = [C, C++, Java, Php, DotNet]d_queue after iterator(): Deque Elements : C Deque Elements : C++ Deque Elements : Java Deque Elements : Php Deque Elements : DotNet

翻譯自: https://www.includehelp.com/java/arraydeque-iterator-method-with-example.aspx

java iterator

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