El método take() de LinkedBlockingDeque devuelve y elimina el encabezado del contenedor Deque. El método lanza una InterruptedException si se interrumpe mientras espera.
Sintaxis:
public E take()
Devoluciones: este método devuelve la cabeza del contenedor Deque.
Excepción : la función lanza una InterruptedException si se interrumpe mientras espera.
Los siguientes programas ilustran el método take() de LinkedBlockingDeque:
Programa 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); } }
Producción:
Linked Blocking Deque: [7855642, 35658786, 5278367, 74381793] Head of Linked Blocking Deque: 7855642 Linked Blocking Deque: [35658786, 5278367, 74381793]
Programa 2: Para demostrar InterruptedException
// 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); } } }
Excepción en tiempo de ejecución:
Max real time limit exceeded due to either by heavy load on server or by using sleep function.
Referencia: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/LinkedBlockingDeque.html#take–