Java中的LinkedBlockingDeque takeLast()方法

LinkedBlockingDeque 的 takeLast() 方法从Deque容器中返回并删除末尾。如果在等待时被中断，该方法将抛出InterruptedException异常。

语法：

public E takeLast()

返回值： 该方法返回Deque容器的末尾（最后一个元素）。

异常： 如果在等待时被中断，则该函数将引发InterruptedException异常。

以下程序说明了LinkedBlockingDeque的takeLast()方法：

程序1:

// Java Program to demonstrate takeLast()
// method of LinkedBlockingDeque
 import java.util.concurrent.LinkedBlockingDeque;
 import java.util.*;
 public class GFG {
     public static void main(String[] args)
         throws InterruptedException
     {

         // create object of LinkedBlockingDeque
         LinkedBlockingDeque LBD
             = new LinkedBlockingDeque();

         // Add numbers to end of LinkedBlockingDeque
         LBD.add(7855642);
         LBD.add(35658786);
         LBD.add(5278367);
         LBD.add(74381793);

         // print Dequeue
         System.out.println("Linked Blocking Deque: " + LBD);

         // removes the last element and prints it
         System.out.println("Head of Linked Blocking Deque: "
                                + LBD.takeLast());

         // prints the Deque
         System.out.println("Linked Blocking Deque: " + LBD);
     }
}

输出：

Linked Blocking Deque: [7855642, 35658786, 5278367, 74381793]
Head of Linked Blocking Deque: 74381793
Linked Blocking Deque: [7855642, 35658786, 5278367]

程序2：

// Java Program to demonstrate takeLast()
// method of LinkedBlockingDeque
 
import java.util.concurrent.LinkedBlockingDeque;
import java.util.*;
 
public class GFG {
     public static void main(String[] args)
         throws InterruptedException
     {

         // create object of LinkedBlockingDeque
         LinkedBlockingDeque LBD
             = new LinkedBlockingDeque();

         // Add numbers to end of LinkedBlockingDeque
         LBD.add(7855642);
         LBD.add(35658786);
         LBD.add(5278367);
         LBD.add(74381793);

         // print Dequeue
         System.out.println("Linked Blocking Deque: " + LBD);

         LBD.clear();

         // throws error as the list is empty and it
         // is interrupted while waiting
         System.out.println("Head of Linked Blocking Deque: "
                                + LBD.takeLast());
     }
}

运行时错误：

由于服务器负荷过重或使用sleep函数，实时限制已达到最大值

引用： https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/LinkedBlockingDeque.html#takeLast