java Java 中的 BlockingDeque remove()方法，示例

Java 中的 BlockingDeque remove()方法，示例

原文:https://www . geeksforgeeks . org/blocking reque-remove-method-in-Java-with-examples/

移出()方法封锁移出德格集装箱的头部。如果德奎容器是空的，该方法抛出一个 NoSuchElementException 。如果参数中传入了一个元素，它将移除给定的元素(如果存在于 Deque 中)。

语法:

public E remove() or boolean remove(element)

参数:该方法接受一个临时参数元素，该元素将从阻塞请求中删除

返回:如果参数被传递，该方法返回真或假，否则不返回任何内容。如果元素在 Deque 中，则返回 true，否则返回 false。

异常:如果德格为空，该函数抛出 NoSuchElementException 。

注意:blocking request的 remove() 方法继承自 Java 中的 LinkedBlockingDeque 类。

下面的程序说明了删除()方法的阻塞请求:

程序 1:

// Java Program Demonstrate remove()
// method of BlockingDeque

import java.util.concurrent.LinkedBlockingDeque;
import java.util.concurrent.BlockingDeque;
import java.util.*;

public class GFG {
    public static void main(String[] args)
        throws InterruptedException
    {

        // create object of BlockingDeque
        BlockingDeque<Integer> BD
            = new LinkedBlockingDeque<Integer>();

        // Add numbers to end of BlockingDeque
        BD.add(7855642);
        BD.add(35658786);
        BD.add(5278367);
        BD.add(74381793);

        // print Deque
        System.out.println("Blocking Deque: " + BD);

        // removes the front element
        BD.remove();
        System.out.println("Blocking Deque: " + BD);

        // removes the element
        BD.remove(5278367);
        System.out.println("Blocking Deque: " + BD);
    }
}

输出:

Blocking Deque: [7855642, 35658786, 5278367, 74381793]
Blocking Deque: [35658786, 5278367, 74381793]
Blocking Deque: [35658786, 74381793]

节目 2:

// Java Program Demonstrate remove()
// method of BlockingDeque

import java.util.concurrent.LinkedBlockingDeque;
import java.util.concurrent.BlockingDeque;
import java.util.*;

public class GFG {
    public static void main(String[] args)
        throws InterruptedException
    {

        // create object of BlockingDeque
        BlockingDeque<Integer> BD
            = new LinkedBlockingDeque<Integer>();

        // Add numbers to end of BlockingDeque
        BD.add(7855642);
        BD.add(35658786);
        BD.add(5278367);
        BD.add(74381793);

        // print Deque
        System.out.println("Blocking Deque: " + BD);

        BD.clear();

        // removes the front element
        BD.remove();
        System.out.println("Blocking Deque: " + BD);

        // removes the element
        BD.remove(5278367);
        System.out.println("Blocking Deque: " + BD);
    }
}

输出:

Exception in thread "main" java.util.NoSuchElementException
    at java.util.concurrent.LinkedBlockingDeque.removeFirst(LinkedBlockingDeque.java:453)
    at java.util.concurrent.LinkedBlockingDeque.remove(LinkedBlockingDeque.java:672)
    at GFG.main(GFG.java:29)