Adapter Pattern

Adapter Pattern: converts the interface of a class into another interface the client expect. Adapter lets classes work together that couldn’t otherwise because of incompatible interfaces.

Example

TV.java

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package com.adapterpattern.example;   public interface TV {  public void watch(); }

LEDTV.java

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package com.adapterpattern.example;   public class LEDTV implements TV{    @Override  public void watch() {   System.out.println("Now are watching LED TV");      }   }

Phone.java

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package com.adapterpattern.example;   public interface Phone {  public void call();   }

SmartPhone.java

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package com.adapterpattern.example;   public class SmartPhone implements Phone{    @Override  public void call() {   System.out.println("You are making calls using SmartPhone");  } }

SmartPhoneTVAdapter.java

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package com.adapterpattern.example;   public class SmartPhoneTVAdapter implements Phone{     TV tv;    public SmartPhoneTVAdapter(TV tv) {   this.tv = tv;  }    @Override  public void call() {   tv.watch();  }    }

SmartPhoneTVTestDrive.java

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package com.adapterpattern.example;   public class SmartPhoneTVTestDrive {  public static void main(String[] args) {   Phone phone = new SmartPhone();   phone.call();   TV tv = new LEDTV();   /*    * TV and Phone are two incompatible interfaces, After implementing    * SmartPhoneTVAdapter we are able watch TV in SmartPhone    */   Phone smartPhoneTV = new SmartPhoneTVAdapter(tv);   smartPhoneTV.call();  } }

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