Java中的 PriorityBlockingQueue spliterator() 方法

PriorityBlockingQueue 的spliterator()方法返回与PriorityBlockingQueue相同元素的Spliterator 。返回的迭代器是弱一致的。它可以与Java 8 中的 Streams 一起使用。它也可以单独和批量遍历元素。Spliterator 是遍历元素的更好方法，因为它提供了对元素的更多控制。

句法：

public Spliterator spliterator()

返回：此方法在 PriorityBlockingQueue 中的元素上返回一个 Spliterator。

下面的程序说明了 PriorityBlockingQueue 的 spliterator() 方法：

示例 1：在包含数字列表的 PriorityBlockingQueue 上演示 spliterator() 方法的程序。

// Java Program Demonstrate spliterator()
// method of PriorityBlockingQueue
  
import java.util.concurrent.PriorityBlockingQueue;
import java.util.*;
public class GFG {
  
    public static void main(String[] args)
    {
        // define capacity of PriorityBlockingQueue
        int capacityOfQueue = 5;
  
        // create object of PriorityBlockingQueue
        PriorityBlockingQueue PrioQueue
            = new PriorityBlockingQueue(capacityOfQueue);
  
        // Add numbers to PriorityBlockingQueue
        PrioQueue.put(7855642);
        PrioQueue.put(35658786);
        PrioQueue.put(5278367);
        PrioQueue.put(74381793);
        PrioQueue.put(76487590);
        PrioQueue.put(87625142);
  
        // create Spliterator of PrioQueue
        // using spliterator() method
        Spliterator numbers = PrioQueue.spliterator();
  
        // print result from Spliterator
        System.out.println("list of Numbers:");
  
        // forEachRemaining method  of Spliterator
        numbers.forEachRemaining((n) -> System.out.println(n));
    }
}

输出：

list of Numbers:
5278367
35658786
7855642
74381793
76487590
87625142

示例 2：在包含名称列表的 PriorityBlockingQueue 上演示 spliterator() 方法的程序。

// Java Program Demonstrate spliterator()
// method of PriorityBlockingQueue
  
import java.util.concurrent.PriorityBlockingQueue;
import java.util.*;
public class GFG {
  
    public static void main(String[] args)
    {
        // define capacity of PriorityBlockingQueue
        int capacityOfQueue = 5;
  
        // create object of PriorityBlockingQueue which contains
        // name of students
        PriorityBlockingQueue names
            = new PriorityBlockingQueue(capacityOfQueue);
  
        // Add names of students of girls college
        names.add("Joyita");
        names.add("Priyanka");
        names.add("Joydeep");
  
        // create Spliterator of PrioQueue
        // using spliterator() method
        Spliterator list = names.spliterator();
  
        // print result from Spliterator
        System.out.println("list of Names:");
  
        // forEachRemaining method  of Spliterator
        list.forEachRemaining((n) -> System.out.println(n));
    }
}

输出：

list of Names:
Joydeep
Priyanka
Joyita

参考： https: Java/util/concurrent/PriorityBlockingQueue.html#spliterator–