A device has a name and can do something. TV, Printer and Microwave are devices. Using TV, you can watch movie; using Printer, you can print; using Microwave, you can cook. When a device is made to dosomething, it shouts out its name as well. An Electrician is one who can test any device. When he is asked to test a device, he will make it do something and test it. A TV can switchChannel as well. So if a tv is given to be tested to an electrician, he will make the tv dosomething and switch channel as well. Write a tester class to test how devices, electricians work.

i tryed this program..,but errors

Class Device
{

   String name = "Device ";

  Public void doSomething()
   {
     System.out.println("My name is "+ name ",i will do some work");
    }
}

  Public Class Tv extends Device implements Electrician
{
    Public void doSomething()
   {
      System.out.println("playing video");
   }

    Public void SwitchChannel()
    {
       System.out.println("Changing channal");
    }

    Public movie()
    {
       System.out.println("watching movie");
    }
}

 Class Printer extends Device
 {
    Public Print()
    {
      System.out.println("Printing newspaper");
    }
 }
 Class MicroWave extends Device
 {
    Public Cook()
    {
      System.out.println("Cooking some stuff");
    }

 }

 class TestDevice
 {
   public static void main(String args[])
   {
     //Device d = new Device();
     //Tv t = new Tv();
     Electrician e = new Tv();
     Printer p = new Printer();
     MicroWave m = new MicroWave();


     e.doSomething();
  }
}

Public interface Electrician
{
    Public abstract void doSomething();
    Public abstract void SwitchChannel();

}