Java ConcurrentLinkedQueue remove()方法

ConcurrentLinkedQueue 的 remove(Object o) 方法用于从这个ConcurrentLinkedQueue中删除一个指定元素的实例（如果有的话）。如果这个ConcurrentLinkedQueue包含一个或多个这样的元素，该方法会移除一个元素e，即o.equals(e)。如果这个ConcurrentLinkedQueue包含指定的元素，Remove()方法返回true，否则将返回false。

语法

public boolean remove(Object o)

参数： 该方法接收一个参数 o ，代表要从ConcurrentLinkedQueue中移除的元素。

返回： 如果这个ConcurrentLinkedQueue包含指定的元素并被移除，该方法返回true。

下面的程序说明了ConcurrentLinkedQueue的remove()方法。

例1 :

// Java Program Demonstrate remove()
// method of ConcurrentLinkedQueue
  
import java.util.concurrent.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // create an ConcurrentLinkedQueue
        ConcurrentLinkedQueue<Integer>
            queue = new ConcurrentLinkedQueue<Integer>();
  
        // Add Numbers to queue
        queue.add(4353);
        queue.add(7824);
        queue.add(78249);
        queue.add(8724);
  
        // Displaying the existing ConcurrentLinkedQueue
        System.out.println("ConcurrentLinkedQueue: " + queue);
  
        // apply remove() for Number 78249
        boolean response = queue.remove(78249);
  
        // print results
        System.out.println("Removing Number 78249 successful: " + response);
  
        // Displaying the existing ConcurrentLinkedQueue
        System.out.println("Updated ConcurrentLinkedQueue: " + queue);
    }
}

输出。

ConcurrentLinkedQueue: [4353, 7824, 78249, 8724]
Removing Number 78249 successful: true
Updated ConcurrentLinkedQueue: [4353, 7824, 8724]

例2 :

// Java Program Demonstrate remove()
// method of ConcurrentLinkedQueue
  
import java.util.concurrent.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // create an ConcurrentLinkedQueue
        ConcurrentLinkedQueue<String>
            queue = new ConcurrentLinkedQueue<String>();
  
        // Add String to queue
        queue.add("Aman");
        queue.add("Amar");
        queue.add("Sanjeet");
        queue.add("Rabi");
  
        // Displaying the existing ConcurrentLinkedQueue
        System.out.println("ConcurrentLinkedQueue: " + queue);
  
        // apply remove() on queue
        boolean response1 = queue.remove("Aman");
  
        // print after applying poll method
        System.out.println("Removing String \"Aman\" successful: " + response1);
  
        // Displaying the existing ConcurrentLinkedQueue
        System.out.println("Updated ConcurrentLinkedQueue: " + queue);
  
        // apply remove() on queue
        boolean response2 = queue.remove("Kisan");
  
        // print after applying poll method
        System.out.println("Removing String \"Kisan\" successful: " + response2);
  
        // Displaying the existing ConcurrentLinkedQueue
        System.out.println("Updated ConcurrentLinkedQueue: " + queue);
    }
}

输出。

ConcurrentLinkedQueue: [Aman, Amar, Sanjeet, Rabi]
Removing String "Aman" successful: true
Updated ConcurrentLinkedQueue: [Amar, Sanjeet, Rabi]
Removing String "Kisan" successful: false
Updated ConcurrentLinkedQueue: [Amar, Sanjeet, Rabi]

参考资料: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ConcurrentLinkedQueue.html#remove-java.lang.Object-