Design Patterns, Behavioural Design, Java, Software Development.
args) { ConcreteSubject subject = new ConcreteSubject(); ConcreteObserver observer1 = new ConcreteObserver(subject); ConcreteObserver observer2 = new ConcreteObserver(subject); subject.setState(5); // Output: Observer updated with state: 5 } } Real-world Use Case: Weather Monitoring System A common