LinkedBlockingDeque addAll() method in Java with Examples

The addAll() method of LinkedBlockingDeque appends all of the elements of the specified collection to the end of this deque.
Syntax: 
 

public void addAll(Collection<E> c)

Parameters: This method accepts a mandatory parameter c which is the collection to be inserted in the end of the LinkedBlockingDeque.
Return Value: This method does not returns anything.
Exceptions: There are 2 exceptions present:- 
 

• IllegalStateException: if the collection cannot be added at this time due to capacity restrictions.
• NullPointerException: if the specified collection is Null.

Below program illustrates the addAll() function of LinkedBlockingDeque class:
Example1: 
 

Example 2: 
 

Reference: https://docs.oracle.com/javase/9/docs/api/java/util/concurrent/LinkedBlockingDeque.html#addAll-java.util.Collection-