What is the purpose of thumbnails in Java?

In Java, thumbnails are typically used to create smaller versions of images. These smaller versions, known as thumbnails, are often used for displaying on web pages or mobile applications to reduce loading times and save bandwidth. By generating thumbnails, image loading speeds can be increased, improving the user experience. Thumbnails can also be used to create preview images in albums or galleries, allowing users to quickly browse and select the images they are interested in. In Java, there are libraries or APIs available to generate thumbnails, such as the Java ImageIO library or third-party libraries like Thumbnailator.