Design Mode Mode Adapter

Adapter Pattern Definition: The interface of a class is transformed into a client's expectation of an interface. Adapters allow classes that are incompatible with the original interface to work together.

Simple definition: encapsulates an object. and provide different interfaces .

Simple examples:

Duck Interface:

Package Headfirst.adapter.ducks;public interface Duck {public void quack ();p ublic void Fly ();

Detailed Ducks:

Package Headfirst.adapter.ducks;public class Mallardduck implements Duck {public void quack () {System.out.println (" Quack ");} public void Fly () {System.out.println ("I ' M Flying");}}

Turkey interface:

Package Headfirst.adapter.ducks;public interface Turkey {public void gobble ();p ublic void Fly ();

Detailed Turkey:

Package Headfirst.adapter.ducks;public class Wildturkey implements Turkey {public void gobble () {System.out.println (" Gobble gobble ");} public void Fly () {System.out.println ("I ' m flying a short distance");}}

To fit a turkey into a duck:

Package Headfirst.adapter.ducks;public class Turkeyadapter implements Duck {Turkey Turkey, public turkeyadapter (Turkey Turkey) {This.turkey = turkey;}    public void Quack () {turkey.gobble ();}  public void Fly () {for (int i=0; i < 5; i++) {turkey.fly ();}}}

Test:

Package Headfirst.adapter.ducks;public class Ducktestdrive {public static void main (string[] args) {Mallardduck duck = new Mallardduck (); Wildturkey Turkey = new Wildturkey ();D uck turkeyadapter = new Turkeyadapter (Turkey);   System.out.println ("The Turkey says ..."); turkey.gobble (); Turkey.fly (); System.out.println ("\nthe Duck says ..."); Testduck (Duck);  System.out.println ("\nthe turkeyadapter says ..."); Testduck (Turkeyadapter);} static void Testduck (Duck Duck) {duck.quack ();d uck.fly ();}}

Output:

The Turkey says ... Gobble Gobblei ' m flying a short distancethe Duck says ... Quacki ' m flyingthe turkeyadapter says ... Gobble Gobblei ' m flying a short distancei ' m flying a short distancei ' m flying a short distancei ' m flying a short distancei ' m flying a short distance

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Design Mode Mode Adapter