如何创建弹出繁忙标签并在执行时可取消的任务？

I am writing an application in java (1.6) using swing. I currently have a JXBusyLabel on a JXLayer over the content area of my program acting as a busy indicator. I want to provide a way to allow others working with me to create a task that pops up the busy label while it's executing. The catch is, the task must be cancel-able. What is the best way to expose the functionality I desire?I am writing an application in java (1.6) using