size : Number Of Elements in Deque

public int size()

Returns the number of elements in this deque.

import java.util.*;
import java.util.concurrent.LinkedBlockingDeque;

class DequeSize{
  public static void main(String args[]){
    Deque<Integer> myDeque = new LinkedBlockingDeque<Integer> (5);
  
  myDeque.add(10);
  myDeque.add(20);
  myDeque.add(30);
  myDeque.add(40);
  myDeque.add(10);
  
  System.out.println("Elements in the Deque are "+ myDeque);
  System.out.println("Number Of Elements in Deque " + myDeque.size());

 }
}

Output

Elements in the Deque are [10, 20, 30, 40, 10]
Number Of Elements in Deque 5

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