BlockingDeque的remove()方法删除了Deque容器的头部。如果Deque容器为空,则此方法引发NoSuchElementException。如果在参数中传递了元素,则它将删除给定元素(如果存在于双端队列中)。
用法:
public E remove() or boolean remove(element)
参数:此方法接受一个临时参数element ,该元素将从BlockingDeque中删除
返回值:如果传递了参数,则此方法返回true或false,否则不返回任何内容。如果元素在双端队列中存在,则返回true,否则返回false。
异常:如果Deque为空,则该函数将引发NoSuchElementException。
注意:BlockingDeque的remove()方法已从Java中的LinkedBlockingDeque类继承。
以下示例程序旨在说明BlockingDeque的remove()方法:
示例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]
示例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)
参考: https://docs.oracle.com/javase/7/docs/api/java/util/concurrent/BlockingDeque.html#remove()
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注:本文由纯净天空筛选整理自gopaldave大神的英文原创作品 BlockingDeque remove() method in Java with Examples。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。