# Uses of Class
javax.imageio.ImageReader

Packages that use ImageReader
Package
Description
javax.imageio
The main package of the Java Image I/O API.
javax.imageio.event
A package of the Java Image I/O API dealing with synchronous notification of events during the reading and writing of images.
javax.imageio.spi
A package of the Java Image I/O API containing the plug-in interfaces for readers, writers, transcoders, and streams, and a runtime registry.

- ## Uses of ImageReader in javax.imageio

  Methods in javax.imageio that return ImageReader
  Modifier and Type
  Method
  Description
  `static ImageReader`
  ImageIO.`getImageReader(ImageWriter writer)`
  Returns an `ImageReader` corresponding to the given `ImageWriter`, if there is one, or `null` if the plug-in for this `ImageWriter` does not specify a corresponding `ImageReader`, or if the given `ImageWriter` is not registered.
  Methods in javax.imageio that return types with arguments of type ImageReader
  Modifier and Type
  Method
  Description
  `static Iterator<ImageReader>`
  ImageIO.`getImageReaders(Object input)`
  Returns an `Iterator` containing all currently registered `ImageReader`s that claim to be able to decode the supplied `Object`, typically an `ImageInputStream`.
  `static Iterator<ImageReader>`
  ImageIO.`getImageReadersByFormatName(String formatName)`
  Returns an `Iterator` containing all currently registered `ImageReader`s that claim to be able to decode the named format.
  `static Iterator<ImageReader>`
  ImageIO.`getImageReadersByMIMEType(String MIMEType)`
  Returns an `Iterator` containing all currently registered `ImageReader`s that claim to be able to decode files with the given MIME type.
  `static Iterator<ImageReader>`
  ImageIO.`getImageReadersBySuffix(String fileSuffix)`
  Returns an `Iterator` containing all currently registered `ImageReader`s that claim to be able to decode files with the given suffix.
  Methods in javax.imageio with parameters of type ImageReader
  Modifier and Type
  Method
  Description
  `static Iterator<ImageTranscoder>`
  ImageIO.`getImageTranscoders(ImageReader reader, ImageWriter writer)`
  Returns an `Iterator` containing all currently registered `ImageTranscoder`s that claim to be able to transcode between the metadata of the given `ImageReader` and `ImageWriter`.
  `static ImageWriter`
  ImageIO.`getImageWriter(ImageReader reader)`
  Returns an `ImageWriter` corresponding to the given `ImageReader`, if there is one, or `null` if the plug-in for this `ImageReader` does not specify a corresponding `ImageWriter`, or if the given `ImageReader` is not registered.

- ## Uses of ImageReader in javax.imageio.event

  Methods in javax.imageio.event with parameters of type ImageReader
  Modifier and Type
  Method
  Description
  `void`
  IIOReadProgressListener.`imageComplete(ImageReader source)`
  Reports that the current image read operation has completed.
  `void`
  IIOReadProgressListener.`imageProgress(ImageReader source, float percentageDone)`
  Reports the approximate degree of completion of the current `read` call of the associated `ImageReader`.
  `void`
  IIOReadProgressListener.`imageStarted(ImageReader source, int imageIndex)`
  Reports that an image read operation is beginning.
  `void`
  IIOReadUpdateListener.`imageUpdate(ImageReader source, BufferedImage theImage, int minX, int minY, int width, int height, int periodX, int periodY, int[] bands)`
  Reports that a given region of the image has been updated.
  `void`
  IIOReadUpdateListener.`passComplete(ImageReader source, BufferedImage theImage)`
  Reports that the current read operation has completed a progressive pass.
  `void`
  IIOReadUpdateListener.`passStarted(ImageReader source, BufferedImage theImage, int pass, int minPass, int maxPass, int minX, int minY, int periodX, int periodY, int[] bands)`
  Reports that the current read operation is about to begin a progressive pass.
  `void`
  IIOReadProgressListener.`readAborted(ImageReader source)`
  Reports that a read has been aborted via the reader's `abort` method.
  `void`
  IIOReadProgressListener.`sequenceComplete(ImageReader source)`
  Reports that a sequence of read operations has completed.
  `void`
  IIOReadProgressListener.`sequenceStarted(ImageReader source, int minIndex)`
  Reports that a sequence of read operations is beginning.
  `void`
  IIOReadProgressListener.`thumbnailComplete(ImageReader source)`
  Reports that a thumbnail read operation has completed.
  `void`
  IIOReadUpdateListener.`thumbnailPassComplete(ImageReader source, BufferedImage theThumbnail)`
  Reports that the current thumbnail read operation has completed a progressive pass.
  `void`
  IIOReadUpdateListener.`thumbnailPassStarted(ImageReader source, BufferedImage theThumbnail, int pass, int minPass, int maxPass, int minX, int minY, int periodX, int periodY, int[] bands)`
  Reports that the current thumbnail read operation is about to begin a progressive pass.
  `void`
  IIOReadProgressListener.`thumbnailProgress(ImageReader source, float percentageDone)`
  Reports the approximate degree of completion of the current `getThumbnail` call within the associated `ImageReader`.
  `void`
  IIOReadProgressListener.`thumbnailStarted(ImageReader source, int imageIndex, int thumbnailIndex)`
  Reports that a thumbnail read operation is beginning.
  `void`
  IIOReadUpdateListener.`thumbnailUpdate(ImageReader source, BufferedImage theThumbnail, int minX, int minY, int width, int height, int periodX, int periodY, int[] bands)`
  Reports that a given region of a thumbnail image has been updated.
  `void`
  IIOReadWarningListener.`warningOccurred(ImageReader source, String warning)`
  Reports the occurrence of a non-fatal error in decoding.

- ## Uses of ImageReader in javax.imageio.spi

  Methods in javax.imageio.spi that return ImageReader
  Modifier and Type
  Method
  Description
  `ImageReader`
  ImageReaderSpi.`createReaderInstance()`
  Returns an instance of the `ImageReader` implementation associated with this service provider.
  `abstract ImageReader`
  ImageReaderSpi.`createReaderInstance(Object extension)`
  Returns an instance of the `ImageReader` implementation associated with this service provider.
  Methods in javax.imageio.spi with parameters of type ImageReader
  Modifier and Type
  Method
  Description
  `boolean`
  ImageReaderSpi.`isOwnReader(ImageReader reader)`
  Returns `true` if the `ImageReader` object passed in is an instance of the `ImageReader` associated with this service provider.