CopyOnWriteArraySet isEmpty() method in Java

The isEmpty(E e) method of CopyOnWriteArraySet checks if the Set is empty or not. It returns true if the Set is empty, else it returns false.

Syntax:  

public boolean isEmpty()

Return Value: The function returns true if the Set is empty, otherwise it returns false.

Below programs illustrate the above function:

Program 1:  

CopyOnWriteArraySet: [32, 67, 98, 100]

Set is not empty

Program 2:  

CopyOnWriteArraySet: []

Set is empty

Reference: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CopyOnWriteArraySet.html#isEmpty--