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https://issues.apache.org/jira/browse/COLLECTIONS-886?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Partha Paul resolved COLLECTIONS-886.
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Resolution: Fixed
This issue was fixed in the afforementioned pr, which was merged in the main.
> [javadoc] CompositeSet.addComposited(Set) does not throw NullPointerException
> when null is passed
> -------------------------------------------------------------------------------------------------
>
> Key: COLLECTIONS-886
> URL: https://issues.apache.org/jira/browse/COLLECTIONS-886
> Project: Commons Collections
> Issue Type: Bug
> Affects Versions: 4.5.0
> Environment: commons-collections: 4.5.0 (and previous versions)
> java: 17.0.12
> Reporter: Partha Paul
> Priority: Major
> Labels: docuentation, documentation-update, implementation
>
> The Javadoc for {{CompositeSet.addComposited(Set)}} explicitly states that a
> {{NullPointerException}} should be thrown when the {{set}} parameter is
> {{{}null{}}}. However, the current implementation contains a null guard (
> {{if set != null}} ) that silently ignores null input and doesn't throw an
> exception.
> h5. Javadoc (Current) contains
> {code:java}
> @throws NullPointerException if {@code set} is null
> {code}
> h5. Implementation (Current)
> {code:java}
> public synchronized void addComposited(final Set<E> set) {
> if (set != null) {
> ...
> all.add(set);
> }
> }
> {code}
> There also exist a test code
> {{org.apache.commons.collections4.set.CompositeSetTest.testAddComposited}}
> which adds {{null}} to the {{CompositeSet}} using this method.
> h5. Steps to Reproduce
> {code:java}
> @Test
> void testNullPointerExceptionOnAddCompositedWithNullSet() {
> CompositeSet<String> set = new CompositeSet<>(new HashSet<>());
> assertThrows(NullPointerException.class, () -> set.addComposited(null));
> }
> {code}
> The test above will fail because no {{NullPointerException}} is thrown.
> Happy to submit pr by fixing the javadoc by removing the
> {{NullPointerException}} clause!
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