boolean offerLast(E e) This method inserts an element at the end into a deque and returns 'true' if element is added to a deque otherwise returns false.
offerLast(E e) method of Deque Interface in Java.
In this section we will discuss how can offerLast(E e) method be implemented in Deque interface in java.
Syntax
boolean offerLast(E e)
This method inserts an element at the end into a deque and returns 'true' if element is added to a deque otherwise returns false.
In this method you can insert a specified element at the end of the underlying deque. This method is preferably used when we are restricted with the capacity of deque. It inserts an element to the underlying deque if it is possible to do so instantly without breaking the capacity limitation of the deque. The AddLast(E e) method is different from this method only by their behavior, the offerLast(E e) method throws exceptions as well as returns 'false' if insertion of an element in deque gets fail whereas addLast(E e) method can only throws an exception.
Parameter description
e : It takes an element what do you want to insert at end into a deque.
Example of offerLast(E e) method
In this example we will show you how does an offerLast(E e) method work in Deque interface. Through this example we will show how you can add a specified element at end into Deque, and count the total number of elements of deque before and after adding the elements and the returned value of this method depending upon the operation.
Example :
package devmanuals.com;
import java.util.Deque;
import java.util.LinkedList;
public class DequeOfferLast {
public static void main(String[] args) {
Deque<Integer> dq = new LinkedList<Integer>();
dq.offer(70);
dq.offer(80);
dq.offer(90);
System.out.println("The elements of Deque are : "+ dq);
System.out.println("And the size of deque : " + dq.size());
System.out.println("Now insert a new element at Last '100'");
boolean b = dq.offerLast(100);
System.out.println("Then the new Elements of deque are : " + dq);
System.out.println("Inserts the specified element : " + b);
System.out.println("And the size of new deque = " + dq.size());
}
}
Output :
|
The elements of Deque are : [70, 80, 90] And the size of deque : 3 Now insert a new element at Last '100' Then the new Elements of deque are : [70, 80, 90, 100] Inserts the specified element : true And the size of new deque = 4 |
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