/**

 A class to test the Door class.

*/

public class DoorTester

{

 /**

 Tests the methods of the Door class

 @param args not used

 */

 public static void main(String[] args)

 {

 Door frontDoor = new Door("Front", "open");

 System.out.println("The front door is " + frontDoor.getState());

 System.out.println("Expected: open");

 Door backDoor = new Door("Back", "closed");

 System.out.println("The back door is " + backDoor.getState());

 System.out.println("Expected: closed"); 

 // Use the mutator to change the state variable

 backDoor.setState("open");

 System.out.println("The back door is " + backDoor.getState());

 System.out.println("Expected: open"); 

 // Use the mutator to change the name variable

 backDoor.setName("Kitchen");

 System.out.println("The back door is called " + backDoor.getName());

 System.out.println("Expected: Kitchen"); 

 Door sideDoor = new Door("Side", "closed");

 System.out.println("The side door is " + sideDoor.getState());

 System.out.println("Expected: closed");

 sideDoor.setState("open");

 System.out.println("The side door is " + sideDoor.getState());

 System.out.println("Expected: open");

 }

}

1.8) Consider the variable state in the class Door and the variable newState in the mutator for state. What kind of variable is state? What kind of variable is newState? When do these variables exist?