B- the common supertype that all entries must share; often this is simply
@GwtCompatible public interface ClassToInstanceMap<B> extends Map<Class<? extends B>,B>
Map, the additional type-safe operations
Like any other
Map<Class, Object>, this map may contain entries for primitive types,
and a primitive type and its corresponding wrapper type may map to different values.
See the Guava User Guide article on
To map a generic type to an instance of that type, use
|Modifier and Type||Method and Description|
Returns the value the specified class is mapped to, or
Maps the specified class to the specified value.
<T extends B> T getInstance(Class<T> type)
nullif no entry for this class is present. This will only return a value that was bound to this specific class, not a value that may have been bound to a subtype.
@CanIgnoreReturnValue <T extends B> T putInstance(Class<T> type, T value)
nullif there was no previous entry.
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