Java LinkedBlockingDeque spliterator()方法

LinkedBlockingDeque 的 spliterator() 方法在LinkedBlockingDeque的元素上返回一个Spliterator。返回的迭代器是弱一致性的。Spliterator可以在Java 8中与Streams一起使用。Spliterator可以单独或批量地遍历元素。

语法

public Spliterator spliterator()

返回： 该方法返回LinkedBlockingDeque中的元素的Spliterator。

下面的程序说明了LinkedBlockingDeque的splitator()方法。

程序1 :

// Java Program to demonstrate spliterator()
// method of LinkedBlockingDeque
  
import java.util.concurrent.LinkedBlockingDeque;
import java.util.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // create object of LinkedBlockingDeque
        LinkedBlockingDeque<Integer> LBD
            = new LinkedBlockingDeque<Integer>();
  
        // Add elements
        LBD.add(22);
        LBD.add(34);
        LBD.add(45);
        LBD.add(67);
  
        // create Spliterator of Deque
        // using spliterator() method
        Spliterator<Integer> numbers = LBD.spliterator();
  
        // getExactSize of Spliterator
        System.out.println("Size of Spliterator : "
                           + numbers.estimateSize());
  
        System.out.println("list of Numbers:");
  
        // forEachRemaining method of Spliterator
        numbers.forEachRemaining((n) -> System.out.println(n));
    }
}

输出:

Size of Spliterator : 4
list of Numbers:
22
34
45
67

示例2

// Java Program to demonstrate spliterator()
// method of LinkedBlockingDeque
  
import java.util.concurrent.LinkedBlockingDeque;
import java.util.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // create object of LinkedBlockingDeque
        LinkedBlockingDeque<String> LBD
            = new LinkedBlockingDeque<String>();
  
        // Add numbers to front of LinkedBlockingDeque
        LBD.add("Geeks");
        LBD.add("forGeeks");
        LBD.add("A");
        LBD.add("Computer");
        LBD.add("Portal");
  
        // create Spliterator of Deque
        // using spliterator() method
        Spliterator<String> numbers = LBD.spliterator();
  
        // getExactSize of Spliterator
        System.out.println("Size of Spliterator : "
                           + numbers.estimateSize());
  
        System.out.println("list of Strings:");
  
        // forEachRemaining method of Spliterator
        numbers.forEachRemaining((n) -> System.out.println(n));
    }
}

输出:

Size of Spliterator : 5
list of Strings:
Geeks
forGeeks
A
Computer
Portal

参考资料 ：<https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/LinkedBlockingDeque.html#spliterator-