Java 中的 concurrentlinkedequeiterator()方法，示例
原文:https://www . geeksforgeeks . org/concurrentlinkedeque-iterator-method-in-Java-with-example/
Java . util . concurrentlinkedrequest . iterator()方法用于返回一个与 concurrentlinkedrequest 元素相同的迭代器。元素以随机顺序从 deque 中返回。
语法:
Iterator *iterate_value* = ConcurrentLinkedDeque.iterator();
参数:函数不取任何参数。
返回值:该方法迭代 deque 的元素并返回值(迭代器)。
下面的程序说明了 Java . util . concurrentlinkedequest . iterator()方法的使用:
例 1:
// Java code to illustrate iterator()
import java.util.concurrent.*;
import java.util.*;
public class ConcurrentLinkedDequeDemo {
public static void main(String args[])
{
// Creating an empty ConcurrentLinkedDeque
ConcurrentLinkedDeque<String> deque
= new ConcurrentLinkedDeque<String>();
// Use add() method to add elements
// into the ConcurrentLinkedDeque
deque.add("Welcome");
deque.add("To");
deque.add("Geeks");
deque.add("4");
deque.add("Geeks");
// Displaying the ConcurrentLinkedDeque
System.out.println("ConcurrentLinkedDeque: "
+ deque);
// Creating an iterator
Iterator value = deque.iterator();
// Displaying the values
// after iterating through the deque
System.out.println("The iterator values are: ");
while (value.hasNext()) {
System.out.println(value.next());
}
}
}
Output:
ConcurrentLinkedDeque: [Welcome, To, Geeks, 4, Geeks]
The iterator values are:
Welcome
To
Geeks
4
Geeks
示例 2: 带有整数元素的 ConcurrentLinkedDeque。
// Java code to illustrate iterator()
import java.util.concurrent.*;
import java.util.*;
public class ConcurrentLinkedDequeDemo {
public static void main(String args[])
{
// Creating an empty ConcurrentLinkedDeque
ConcurrentLinkedDeque<Integer> deque
= new ConcurrentLinkedDeque<Integer>();
// Use add() method
// to add elements into the ConcurrentLinkedDeque
deque.add(10);
deque.add(20);
deque.add(30);
deque.add(40);
deque.add(50);
// Displaying the ConcurrentLinkedDeque
System.out.println("ConcurrentLinkedDeque: "
+ deque);
// Creating an iterator
Iterator value = deque.iterator();
// Displaying the values
// after iterating through the deque
System.out.println("The iterator values are: ");
while (value.hasNext()) {
System.out.println(value.next());
}
}
}
Output:
ConcurrentLinkedDeque: [10, 20, 30, 40, 50]
The iterator values are:
10
20
30
40
50
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