Dali
· Dali is an image blur library for Android. It is easy to use, fast and extensible. Dali contains several modules for either static blurring, live blurring and animations.
Download JD-GUI to open JAR file and explore Java source code file (.class .java)
Click menu "File → Open File..." or just drag-and-drop the JAR file in the JD-GUI window dali-0.4.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.