The removeIf() method of CopyonWriteArraySet method removes the element from this CopyOnWriteArraySet that satisfies the specified condition.
public boolean removeIf (Predicate<E> filter)
Parameters: This method accepts a mandatory parameter filter which is the predicate value based on which elements are removed from this set.
Return Value: This method returns a boolean value such as true, if the CopyOnWriteArraySet is changed. Else this method returns false.
Exceptions: This method throws NullPointerException if the specified Predicate filter is null.
Below program illustrates the removeIf() function of CopyOnWriteArrayList class :
CopyOnWriteArraySet: [10, 20, 30, 40, 50, 60, 70, 80, 90] Updated CopyOnWriteArraySet: [10, 20, 40, 50, 70, 80]
CopyOnWriteArraySet: [GeeksforGeeks, GFG, Geeks, Gfg] java.lang.NullPointerException
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