Example usage for Java org.apache.commons.collections4 SetUtils fields, constructors, methods, implement or subclass
The text is from its open source code.
Set | emptyIfNull(final Set Returns an immutable empty set if the argument is null , or the argument itself otherwise. |
Set | emptySet() Get a typed empty unmodifiable Set. |
Set | unmodifiableSet(final Set extends E> set) Returns an unmodifiable set backed by the given set. |