thumbnail generation library for Java

 Thumbnailator simplifies the task of making thumbnails into a single method
 call.
 .
  * Create high-quality thumbnails from existing images.
  * Option to embed a watermark (such as a logo) in the thumbnails.
  * Transparency of the watermark is adjustable from transparent (0%) to opaque
    (100%).
  * Supports rotation of thumbnail.
  * Preserves the aspect ratio of resulting thumbnail, if desired.