The
removeAll() method of
java.util.concurrent.ConcurrentSkipListSet is an in-built function in Java which returns removes from this set all of its elements that are contained in the specified collection. If the specified collection is also a set, this operation effectively modifies this set so that its value is the asymmetric set difference of the two sets.
Syntax:
public boolean removeAll(Collection c)
Parameter: The function accepts a single parameter
c
Return Value: The function returns true if this set changed as a result of the call.
Exception: The function throws the following exceptions:
ClassCastException - if the types of one or more elements in this set are incompatible with the specified collection
NullPointerException - if the specified collection or any of its elements are null
Below programs illustrate the ConcurrentSkipListSet.removeAll() method:
Program 1:
Output:
Contents of the list: [1, 3, 5, 7, 9]
Contents of the set: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
Contents of the set after removal: [2, 4, 6, 8, 10]
Program 2: Program to show NullPOinterException in removeAll().
