Software Design Patterns Questions Medium
The Adapter design pattern is a structural design pattern that allows objects with incompatible interfaces to work together. It acts as a bridge between two incompatible interfaces, converting the interface of one class into another interface that clients expect.
The main components of the Adapter pattern are:
1. Target: This is the interface that the client expects to work with.
2. Adapter: This is the class that implements the Target interface and adapts the interface of the Adaptee.
3. Adaptee: This is the class that has an incompatible interface and needs to be adapted.
An example of the Adapter design pattern is the usage of different power adapters for electronic devices. Consider a scenario where you have a laptop with a European power plug, but you are in a country that uses a different type of power plug, such as the US. In this case, you need an adapter to convert the European power plug into a US power plug.
In this example, the Target interface is the US power plug, which is compatible with the power outlets in the US. The Adaptee is the European power plug, which is incompatible with the US power outlets. The Adapter class acts as a bridge between the Target and Adaptee, converting the European power plug into a US power plug.
By using the Adapter design pattern, you can seamlessly connect your laptop to the US power outlet without the need for any modifications to the laptop or the power outlet. The adapter handles the conversion of the incompatible interfaces, allowing the laptop to function properly.
In summary, the Adapter design pattern is used when you have two incompatible interfaces and need to make them work together. It acts as a bridge between the interfaces, converting the interface of one class into another interface that clients expect. The power adapter example demonstrates how the Adapter pattern can be used in real-world scenarios.