# 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.