See: Description
| Interface | Description | 
|---|---|
| RegisterableService | An optional interface that may be provided by service provider
 objects that will be registered with a
  ServiceRegistry. | 
| ServiceRegistry.Filter | A simple filter interface used by
  ServiceRegistry.getServiceProvidersto select
 providers matching an arbitrary criterion. | 
| Class | Description | 
|---|---|
| IIORegistry | A registry for service provider instances. | 
| IIOServiceProvider | A superinterface for functionality common to all Image I/O service
 provider interfaces (SPIs). | 
| ImageInputStreamSpi | The service provider interface (SPI) for
  ImageInputStreams. | 
| ImageOutputStreamSpi | The service provider interface (SPI) for
  ImageOutputStreams. | 
| ImageReaderSpi | The service provider interface (SPI) for  ImageReaders. | 
| ImageReaderWriterSpi | A superclass containing instance variables and methods common to
  ImageReaderSpiandImageWriterSpi. | 
| ImageTranscoderSpi | The service provider interface (SPI) for  ImageTranscoders. | 
| ImageWriterSpi | The service provider interface (SPI) for  ImageWriters. | 
| ServiceRegistry | A registry for service provider instances. | 
The javax.imageio.spi package contains service
provider interfaces for reading, writing, and transcoding images, and
obtaining input and output streams, as well as a run-time registry
that discovers installed service provider instances and allows new
instances to be registered dynamically.
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