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
