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Showing posts from January, 2026

Command Design Pattern in Java

The Command design pattern is a behavioral design pattern that encapsulates a request or an action as a separate object, allowing for more flexibility and extensibility in handling requests. What is the Command Design Pattern? The Command pattern is used to decouple the requester of an action from the provider of the action. It does this by introducing an intermediate object, known as the Command, which encapsulates the request. Components of the Command Pattern Command : This is the interface that declares the execute method. ConcreteCommand : This class implements the Command interface and defines the actions to be performed. Receiver : This is the object that actually performs the action. Invoker : This is the object that receives the command and invokes the execute method. Client : This is the object that creates the command and sets the receiver. Java Implementation Here's an example implementation of the Command pattern in Java: Java // Command interface public interface C...