Java中的LinkedBlockingDeque take（）方法-yiteyi-C++库

这个 拿（） 方法 LinkedBlockingDeque 返回并移除Deque容器的头部。该方法抛出了一个 中断异常 如果在等待时被打断。

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语法：

public E take()

返回： 此方法返回Deque容器的头部。

例外：函数抛出一个 中断异常 如果在等待时被打断。

下面的程序演示了LinkedBlockingDeque的take（）方法：

项目1：

                     // Java Program to demonstrate take()                   
                     // 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<Integer> LBD                   
                                         =                               new                               LinkedBlockingDeque<Integer>();                   
                             
                                         // 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 front element and prints it                   
                                         System.out.println(                               "Head of Linked Blocking Deque: "                   
                                         + LBD.take());                   
                             
                                         // prints the Deque                   
                                         System.out.println(                               "Linked Blocking Deque: "                               + LBD);                   
                                         }                   
                     }                   

输出：

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

项目2： 演示中断异常

                     // Java Program to demonstrate take()                   
                     // 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<Integer> LBD                   
                                         =                               new                               LinkedBlockingDeque<Integer>();                   
                             
                                         // print Dequeue                   
                                         // the Deque is empty                   
                                         System.out.println(                               "Linked Blocking Deque: "                               + LBD);                   
                             
                                         try                               {                   
                                         // throws error as the list is empty                   
                                         // and it is interrupted while waiting                   
                                         System.out.println(                               "Head of Linked Blocking Deque: "                   
                                         + LBD.take());                   
                                         }                   
                                         catch                               (Exception e) {                   
                                         System.out.println(                               "Exception: "                               + e);                   
                                         }                   
                                         }                   
                     }                   

运行时异常：

Max real time limit exceeded due to either by heavy load on server or by using sleep function.

参考： https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/LinkedBlockingDeque.html#take–

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