Question

Create an interface called VideoRecorder that has methods that represent four standard operations on a video recorder (play, stop, record, pause). Define the method signatures any way you desire:

Explain how a class might implement this interface and then write the code that is necessary in the header of the class:

Draw a UML class diagram that shows the relationships among the elements

Answer 1

Since you have not mentioned the language of your preference, I am providing the code in Java.

CODE

interface VideoRecorder {

public void play();

public void stop();

public void record();

public void pause();

}

class VideoRecorderImplementation implements VideoRecorder {

@Override

public void play() {

// TODO Auto-generated method stub

}

@Override

public void stop() {

// TODO Auto-generated method stub

}

@Override

public void record() {

// TODO Auto-generated method stub

}

@Override

public void pause() {

// TODO Auto-generated method stub

}

}

UML Diagram