1.Can a module dependency be made optional at run time? If so, how? 2. Briefly describe what open and opens do. 3. Can the look and feel of a Swing component be changed? If so, what feature enables...

1.Can a module dependency be made optional at run time? If so, how? 2. Briefly describe what open and opens do. 3. Can the look and feel of a Swing component be changed? If so, what feature enables this? 4. What is the most commonly used top-level container for an application? 5. Top-level containers have several panes. To what pane are components added?