java iterator

ArrayDeque类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()方法用于在双端队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()方法是一个非静态方法，只能通过类对象访问，如果尝试使用类名称访问该方法，则会收到错误消息。

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

  返回迭代器时，iterator()方法不会引发异常。

Syntax:

句法：

public Iterator
    
      iterator();
    

Parameter(s):

参数：

• It does not accept any parameter.

  它不接受任何参数。

Return value:

返回值：

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

该方法的返回类型为Iterator <T> ，它在双端队列元素上返回一个迭代器。

Example:

例：

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

Output

输出量

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

翻译自:

java iterator