## 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 and 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 and 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 and 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 and 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 operationshas 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 occurence 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 and 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 and 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.

Submit a bug or feature
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
Copyright © 1993, 2015, Oracle and/or its affiliates. All rights reserved.