Adapter mode (Factory Mode 8)

Adapter mode:

Adapted classes:

Adapter interface:

Adapter: Use the class adapter approach, which has a disadvantage because Java only has single inheritance,

Caller: Superclass reference to subclass object (polymorphic)

The caller invokes the adapter,

Super. Request (); Adaptee’s request() is actually called;

To access the object being adapted.

The second adaptation, object adapter, uses a composite approach to integrate with the object being adapted

Integrate the adapted object into the adapter class, through the getter(),

The setter() method calls the adapted object

Caller:

Create the adapter to introduce the adapted object A

Target t = new Adapter2(a)

Use the request() method of the adapted object directly inside the adapter.

Class diagram:

Where the adapter is used:

Two adapter modes