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Interface ServiceLoader.Provider<S>

Type Parameters:: S - The service type

All Superinterfaces:: Supplier<S>

Enclosing class:: ServiceLoader<S>

public static interface ServiceLoader.Provider<S> extends Supplier<S>

Represents a service provider located by ServiceLoader.

When using a loader's stream() method then the elements are of type Provider. This allows processing to select or filter on the provider class without instantiating the provider.

Since:: 9

Method Summary

Modifier and Type	Method	Description
`S`	`get()`	Returns an instance of the provider.
`Class<? extends S>`	`type()`	Returns the provider type.

Method Details

type

Class<? extends S> type()

Returns the provider type. There is no guarantee that this type is accessible or that it has a public no-args constructor. The get() method should be used to obtain the provider instance.

When a module declares that the provider class is created by a provider factory then this method returns the return type of its public static "provider()" method.

Returns:: The provider type

get

S get()

Returns an instance of the provider.

Specified by:: get in interface Supplier<S>
Returns:: An instance of the provider.
Throws:: ServiceConfigurationError - If the service provider cannot be instantiated, or in the case of a provider factory, the public static "provider()" method returns null or throws an error or exception. The ServiceConfigurationError will carry an appropriate cause where possible.

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https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/util/ServiceLoader.Provider.html