Java 中 LinkedBlockingDeque take()方法

原文:https://www . geeksforgeeks . org/linkedblockingrequest-take-method-in-Java/

take() 方法链接锁定请求返回并从中移除德格集装箱的头部。如果在等待时被中断,该方法将抛出中断异常

语法:

public E take()

返回:该方法返回德格容器的头部。

异常:如果在等待时被中断,该功能会抛出中断异常

下面的程序说明了 link edblockingrequest 的 take()方法:

节目 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]

程序 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);
        }
    }
}

【运行时间异常:

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/linkedblockingrequest . html # take–