Abstract Appliance with Power Tracking

An abstract class Appliance is provided with a boolean isOn field (starts false), turnOn(), turnOff(), and an abstract method int powerUsage().

Create a WashingMachine class that extends Appliance.

Requirements:
1. powerUsage() returns 500 when the machine is on, and 0 when off.
2. No constructor needed (default is fine).

Do NOT write a main method.

Expected Output:

0↵
500↵
0↵

= newline. The output ends with a newline — print one after the last line.

Hints2 available

Topics:

Abstract ClassesClasses

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