Why is this answer wrong?

[RunjiaChen]

Why is it that the dependency goes from Activity to ProgressWatcher and not Activity to Watcher? Is is because Watcher is an interface? How do we know that its ProgressWatcher and not UIWidget?

[baskargopinath]

i think,

• Watcher objects are stored as a variable in Activity so there has to be an association line from Watcher -> Activity
• If there is already an association line, there is no need to show another dependency line from Watcher -> Activity
• Activity directly accesses a constant in ProgressWatcher but there is no association between them, so we show it as a dependency

[damithc]

Good answer @bgopi23