Sunday, 26 January 2014

Bridge Design pattern - Implementation [LED TV]



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Bridge Design pattern - Implementation [LED TV]



















Bridge Design pattern - Implementation [LED TV] - Class Diagram






















LEDTV.java

public interface LEDTV
{
public void switchOn();

public void switchOff();

public void setChannel(int channelNumber);
}


SamsungLedTv.java

public class SamsungLedTv implements LEDTV
{

@Override
public void switchOn()
{
System.out.println("Turning ON.. Samsung TV.");
}

@Override
public void switchOff()
{
System.out.println("Turning Off.. Samsung TV.");

}

@Override
public void setChannel( int channelNumber )
{
System.out.println("Setting channel Number " + channelNumber + ".. on Samsung TV");

}

}


SonyLedTv.java

public class SonyLedTv implements LEDTV
{

@Override
public void switchOn()
{
System.out.println("Turning ON.. Sony TV.");
}

@Override
public void switchOff()
{
System.out.println("Turning Off.. Sony TV.");

}

@Override
public void setChannel( int channelNumber )
{
System.out.println("Setting channel Number " + channelNumber + ".. on Sony TV");

}

}


AbstractRemoteControl.java

abstract class AbstractRemoteControl
{

protected LEDTV ledTv;

protected AbstractRemoteControl( LEDTV ledTv )
{
this.ledTv = ledTv;
}

public abstract void switchOn();

public abstract void switchOff();

public abstract void setChannel( int channelNumber );

}

SamsungRemoteControl.java

public class SamsungRemoteControl extends AbstractRemoteControl
{

public SamsungRemoteControl( LEDTV ledtv )
{
super(ledtv);
}

@Override
public void switchOn()
{
ledTv.switchOn();
}

@Override
public void switchOff()
{
ledTv.switchOff();

}

@Override
public void setChannel( int channelNumber )
{
ledTv.setChannel(channelNumber);
}

}

SonyRemoteControl.java

public class SonyRemoteControl extends AbstractRemoteControl
{
public SonyRemoteControl( LEDTV ledtv )
{
super(ledtv);
}

@Override
public void switchOn()
{
ledTv.switchOn();
}

@Override
public void switchOff()
{
ledTv.switchOff();

}

@Override
public void setChannel( int channelNumber )
{
ledTv.setChannel(channelNumber);
}
}

Client.java

public class Client
{

public static void main( String[] args )
{

SonyRemoteControl sonyRemoteControl = new SonyRemoteControl(new SonyLedTv());
sonyRemoteControl.switchOn();
sonyRemoteControl.switchOff();
sonyRemoteControl.setChannel(20);
System.out.println("**********************************************************************");
SamsungRemoteControl samsungRemoteControl = new SamsungRemoteControl(new SamsungLedTv());
samsungRemoteControl.switchOn();
samsungRemoteControl.switchOff();
samsungRemoteControl.setChannel(20);
}
}

Output

Turning ON.. Sony TV.
Turning Off.. Sony TV.
Setting channel Number 20.. on Sony TV
**********************************************************************
Turning ON.. Samsung TV.
Turning Off.. Samsung TV.
Setting channel Number 20.. on Samsung TV

See also:

  • Bridge Design pattern - Introduction
  • Bridge Design pattern - Real time example [Send Message]
  • Bridge Design pattern - Real time example [Publish Message]
  • Bridge Design pattern - Real time example [Shape]
  • Bridge Design pattern - Real time example [TV]
  • Bridge Design pattern - Class Diagram
  • Bridge Design pattern - Implementation [Shape]
  • Bridge Design pattern - Implementation [Send Message]
  • Bridge Design pattern - Implementation [Publish Message]
  • Bridge Design pattern - Keypoints
  • All Design Patterns Links
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