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Command design pattern geeksforgeeks

What is Command pattern in DP?

1 April 2022 Enpatika.com Genel

Command pattern is a data driven design pattern and falls under behavioral pattern category . A request is wrapped under an object as command and passed to invoker object.

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What is the motivation for Command pattern?

1 April 2022 Enpatika.com Genel

The main motivation for using the Command pattern is that the executor of the command does not need to know anything at all about what the command is, what context information it needs on or what it does . All of that is encapsulated in the command.

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What is the difference between command and strategy pattern?

1 April 2022 Enpatika.com Genel

The main difference is , the command does some action over the object . It may change the state of an object. While Strategy decides how to process the object. It encapsulates some business logic.

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What is a command in Command pattern?

1 April 2022 Enpatika.com Genel

In command pattern there is a Command object that encapsulates a request by binding together a set of actions on a specific receiver . It does so by exposing just one method execute() that causes some actions to be invoked on the receiver.1 Eyl 2021

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What is the Command pattern good for?

1 April 2022 Enpatika.com Genel

The command pattern should be used when: You need a command to have a life span independent of the original request, or if you want to queue, specify and execute requests at different times . You need undo/redo operations. The command’s execution can be stored for reversing its effects.

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What is a Command pattern in Java?

1 April 2022 Enpatika.com Genel

A Command pattern is an object behavioral pattern that allows us to achieve complete decoupling between the sender and the receiver . (A sender is an object that invokes an operation, and a receiver is an object that receives the request to execute a certain operation.

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