The removeIf() method of LinkedBlockingDeque removes the element from this LinkedBlockingDeque that satisfies the specified condition.
Syntax:
public boolean removeIf (Predicate<? super E> filter)
Parameters: This method accepts a mandatory parameter filter which is the predicate value based on which elements are removed from this Deque.
Returns: This method returns a boolean value such as true, if the LinkedBlockingDeque is changed. Else this method returns false.
Exceptions: This method throws NullPointerException if the specified Predicate filter is null.
Below program illustrates the removeIf() function of LinkedBlockingDeque class :
Program 1:
// Java Program Demonstrate removeIf()// 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 Deque System.out.println("Linked Blocking Deque: " + LBD); // If a number in the List is // divisible by 3, then remove it LBD.removeIf(number -> number % 3 == 0); System.out.println("Linked Blocking Deque: " + LBD); }} |
Output:
Linked Blocking Deque: [7855642, 35658786, 5278367, 74381793] Linked Blocking Deque: [7855642, 5278367]
Program 2:
// Java Program Demonstrate removeIf()// 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); try { // if the predicate is null, // then it will throw NullPointerException LBD.removeIf(null); } catch (Exception e) { System.out.println(e); } }} |
Output:
Linked Blocking Deque: [7855642, 35658786, 5278367, 74381793] java.lang.NullPointerException
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