Java ConcurrentLinkedQueue removeAll() Method

by Online Tutorials Library July 22, 2022

Java ConcurrentLinkedQueue removeAll() Method

The removeAll() method of ConcurrentLinkedQueue class is used to remove the elements of the ConcurrentLinkedQueue that are matched with the items of the specified collection.

Syntax:

Parameters:

Here, the parameter c is the collection containing elements to be removed from ConcurrentLinkedQueue.

Specified By:

The removeAll () method of ConcurrentLinkedQueue class is specified by:

removeAll in interface Collection<E>.

Return Value:

The removeAll () method returns a Boolean value ‘true’ if the collection is changed otherwise it returns false.

Throws:

It throws NullPointerException if the specified collection does not support null elements or it contains one or more null elements.

Example 1

  import java.util.ArrayList;  import java.util.List;  import java.util.concurrent.ConcurrentLinkedQueue;  public class ConcurrentLinkedQueueRemoveAllExample1 {      public static void main(String[] args) {          ConcurrentLinkedQueue<Character> queue = new ConcurrentLinkedQueue<Character>();          char c;          for(c=’A’;c<=’Z’;++c){              queue.add(c);          }          System.out.println(“Queue : “+queue);          List<Character> list = new ArrayList<Character>();          list.add(‘A’);          list.add(‘E’);          list.add(‘I’);          list.add(‘O’);          list.add(‘U’);          System.out.println(“List of vowels : “+list);          //removes all the elements int the queue which are present in list          queue.removeAll(list);          System.out.println(“Queue without vowels : “+queue);      }  }  

Test it Now

Output:

Queue : [A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z]  List of vowels : [A, E, I, O, U]  Queue without vowels : [B, C, D, F, G, H, J, K, L, M, N, P, Q, R, S, T, V, W, X, Y, Z]

Example 2

  import java.util.ArrayList;  import java.util.List;  import java.util.concurrent.ConcurrentLinkedQueue;  public class ConcurrentLinkedQueueRemoveAllExample2 {      public static void main(String[] args) {          ConcurrentLinkedQueue<Integer> queue = new ConcurrentLinkedQueue<Integer>();          List<Integer> list = new ArrayList<Integer>();          for (int i=1;i<11;i++){              queue.add(i);}          System.out.println(“Total no : “+ queue);          for (int i=1;i<11;i++){              i=i+1;              list.add(i);}          //removes all the elements int the queue which are present in list          queue.removeAll(list);          System.out.println(” Even no : “+list);          System.out.println(” Odd no : “+queue);      }  }  

Test it Now

Output:

Total no : [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]   Even no : [2, 4, 6, 8, 10]   Odd no : [1, 3, 5, 7, 9]

Example 3

  import java.util.ArrayList;  import java.util.List;  import java.util.concurrent.ConcurrentLinkedQueue;  public class ConcurrentLinkedQueueRemoveAllExample3 {      public static void main(String[] args) {          ConcurrentLinkedQueue<Integer> queue = new ConcurrentLinkedQueue<Integer>();          List<Integer> list = new ArrayList<Integer>();          queue.add(67);          queue.add(100);          queue.add(null);          list.add(67);          queue.removeAll(list);          System.out.println(“Queue : “+queue);      }  }  

Test it Now

Output:

Exception in thread "main" java.lang.NullPointerException  at java.util.concurrent.ConcurrentLinkedQueue.checkNotNull(ConcurrentLinkedQueue.java:920)  at java.util.concurrent.ConcurrentLinkedQueue.offer(ConcurrentLinkedQueue.java:327)  at java.util.concurrent.ConcurrentLinkedQueue.add(ConcurrentLinkedQueue.java:297)  at com.tutorAspire.ConcurrentLinkedQueueRemoveAllExample3.main(ConcurrentLinkedQueueRemoveAllExample3.java:12)

Next TopicJava ConcurrentLinkedQueue

Java ConcurrentLinkedQueue removeAll() Method

Java ConcurrentLinkedQueue removeAll() Method

Syntax:

Parameters:

Specified By:

Return Value:

Throws:

Example 1

Example 2

Example 3

LCD Interfacing with AVR

JavaScript TypedArray entries() Method

You may also like