In a package named "lecture10", implement the following. Lecture Question • class Battery with • A constructor that takes a variable named "charge" of type Int. • abstract class Electronic with • A constructor that takes no parameters. • A state variable named "battery" of type Battery. A method named "use" that takes no parameters and returns Unit (this can be abstract). • A method named "replaceBattery" that takes a Battery as a parameter and returns a Battery. • This method swaps the input Battery with the Battery currently stored in this Electronic's state variable. • The returned Battery is the one that was in the state variable when the method is called. class Flashlight that extends Electronic. A constructor that takes no parameters • When a new Flashlight is created, assign the inherited state variable named "battery" to a new Battery with 5 charge (ie. Batteries included). • Override the "use" method to reduce the charge of the battery in the state variable by 1 if its charge is 1 or greater. class BoomBox that extends Electronic. • A constructor that takes a variable of type Battery and assigns it to the inherited state variable named "battery". • Your BoomBox constructor parameter should have a different name than the state variable. • Override the "use" method to reduce the charge of the battery in the state variable by 3 if its charge is 3 or greater.

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