Behavioral Design Patterns

Behavioral design patterns deal with the communication and collaboration between objects, focusing on how they interact and distribute responsibilities. There are 11 commonly recognized behavioral design patterns. Here, I’ll provide a detailed explanation and a full example for each one:

1. Chain of Responsibility Pattern:

• Purpose: Passes a request along a chain of handlers, each handling the request or passing it to the next handler in the chain.
• Example: Implementing a help desk system where support requests are first handled by Level 1 support, and if they can’t resolve it, they pass it to Level 2, and so on.

abstract class SupportHandler {
    private SupportHandler nextHandler;
    
    public void setNextHandler(SupportHandler nextHandler) {
        this.nextHandler = nextHandler;
    }
    
    public abstract void handleRequest(String request);
}

class Level1SupportHandler extends SupportHandler {
    @Override
    public void handleRequest(String request) {
        if (request.equals("Level 1")) {
            System.out.println("Handled by Level 1 support");
        } else if (nextHandler != null) {
            nextHandler.handleRequest(request);
        }
    }
}

class Level2SupportHandler extends SupportHandler {
    @Override
    public void handleRequest(String request) {
        if…