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| JavaTM 2 Platform Standard Ed. 5.0
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## Package javax.imageio

The main package of the Java Image I/O API.

See:
Description

Interface Summary
IIOParamController | An interface to be implemented by objects that can determine the settings of an `IIOParam` object, either by putting up a GUI to obtain values from a user, or by other means.
ImageTranscoder | An interface providing metadata transcoding capability.

Class Summary
IIOImage | A simple container class to aggregate an image, a set of thumbnail (preview) images, and an object representing metadata associated with the image.
IIOParam | A superclass of all classes describing how streams should be decoded or encoded.
ImageIO | A class containing static convenience methods for locating `ImageReader`s and `ImageWriter`s, and performing simple encoding and decoding.
ImageReader | An abstract superclass for parsing and decoding of images.
ImageReadParam | A class describing how a stream is to be decoded.
ImageTypeSpecifier | A class that allows the format of an image (in particular, its `SampleModel` and `ColorModel`) to be specified in a convenient manner.
ImageWriteParam | A class describing how a stream is to be encoded.
ImageWriter | An abstract superclass for encoding and writing images.

Exception Summary
IIOException | An exception class used for signaling run-time failure of reading and writing operations.

## Package javax.imageio Description

The main package of the Java Image I/O API.

Many common image I/O operations may be performed using the static methods of the `ImageIO` class.

This package contains the basic classes and interfaces for describing the contents of image files, including metadata and thumbnails (`IIOImage`); for controlling the image reading process (`ImageReader`, `ImageReadParam`, and `ImageTypeSpecifier`) and image writing process (`ImageWriter` and `ImageWriteParam`); for performing transcoding between formats (`ImageTranscoder`), and for reporting errors (`IIOException`).

All implementations of javax.imageio provide the following standard image format plug-ins:

| Reading | Writing
--- | --- | ---
JPEG | yes | yes
PNG | yes | yes
BMP | yes | yes
WBMP | yes | yes
GIF | yes | no

Since:
  1.4

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

Copyright 2004 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.