javax.imageio.ImageIO

javax.imageio.ImageIO is a class in the Java programming language that provides a way to read and write images in various formats such as JPEG, PNG, BMP, and GIF. It is part of the Java Image I/O API, which allows developers to manipulate images in their Java applications.

The ImageIO class provides static methods for reading and writing images from and to files, streams, and URLs. It also provides methods for registering and retrieving image readers and writers for different image formats.

Some common methods of the ImageIO class include:

- read(File input): reads an image from a file and returns a BufferedImage object.
- write(RenderedImage im, String formatName, File output): writes a rendered image to a file in the specified image format.
- getImageReadersByFormatName(String formatName): returns an iterator of all registered ImageReader objects that can read the specified image format.

Overall, the ImageIO class is an important tool for working with images in Java and is useful in a wide range of applications such as image editing, processing, and analysis.