Which of the following patterns allows for objects to register on certain events and/or data when such an event or change in data occurs?

Keep practicing — related questions

• The Java API uses this pattern in the event model of its AWT/Swing Classes
• The Java API uses this pattern in the event model of its AWT/Swing Classes
• The -------------- Method pattern should be used to implement the invariant parts of an algorithm once and ...
• The -------------- Method pattern should be used to implement the invariant parts of an algorithm once and ...
• The Observer pattern:
• In which of the following situations would you use the Observer pattern?
• What pattern does this code have implemented
• A class that operates on different objects. Which one would be a better pattern to use?