How to rotate an image gradually in Swing?
In addition to @tulskiy’s helpful observations, I would add two points: Always construct your GUI on the event dispatch thread, as shown below. An sscce should be a Short, Self Contained, Correct (Compilable), Example. As a convenience, don’t require others to recreate multiple public classes; use top-level (package-private) or nested classes. As this is a … Read more