Java Deque addAll() Method

The addAll() method of Java Deque Interface is used to add all the elements in a specified collection at the end of the deque.

Specified by:

• addAll in interface Collection<E>

Syntax:

Parameter:

The above method consists of only one parameter:

1. The element 'c' that needs to be inserted.

Return:

The above method returns true if the given deque is changed.

Example 1

Output:

The marks for student1 : 
28
25
26
The marks for student2 : 
22
19
20
The total list for the marks : 
28
25
26
22
19
20

Example 2

Output:

Enter the name of Employees for List 1: 
Sam
Ram 
Priya
Urvashi
Enter the name of Employees for List 2: 
Ravi
Rita 
Yashika
Lavish
The final list for the employees is given as : 
Sam
Ram
Priya
Urvashi
Ravi
Rita
Yashika
Lavish