CopyOnWriteArrayList set() method in Java with Examples

The set(E e) method in the class CopyOnWriteArrayList class replaces the element at the specified index with the element provided as a parameter to the method. The method returns the element that has been replaced by the new element.
Syntax:  

public E set(int index, E element)

Parameters: The method takes two parameters mentioned below: 

• Index: Contains the position at which the new element is to replace the existing one. It is mandatory to add.
• Element: Contains the new element to be replaced with.

Return Value: The method returns the element that has been replaced.
Exceptions: The method throws IndexOutOfBoundsException occurs when the method has an index that is either less than 0 or greater than the size of the list. 
Below are some programs to illustrate the use of CopyOnWriteArrayList.set() method:
Program 1:
 

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Program 2:
 

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