What does java facade pattern refer to?

1. It is required that the external and internal communication of the subsystem must be carried out through unified objects. The facade mode provides high-level interfaces to make the subsystem easier to use.

2. Generally speaking, it is to design a class specifically for external services. The facade object is the only channel in the external access subsystem.

Example

public class FacadeClient {
 
    public static void main(String[] args) {
        Car car = new Car();
        car.run();
        car.stop();
    }
}

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