@DoNotMock("Use Interners.new*Interner") @GwtIncompatible public interface Interner<E>Provides similar behavior to
String.intern()for any immutable type. Common implementations are available from the
String.intern()has some well-known performance limitations, and should generally be avoided. Prefer
Internerimplementation even for
- Kevin Bourrillion
internChooses and returns the representative instance for any of a collection of instances that are equal to each other. If two equal inputs are given to this method, both calls will return the same instance. That is,
intern(a).equals(a)always holds, and
intern(a) == intern(b)if and only if
a.equals(b). Note that
intern(a)is permitted to return one instance now and a different instance later if the original interned instance was garbage-collected.
Warning: do not use with mutable objects.