In Scala

IN SCALA

Question: in a package named "execution", implement the following classes: class Battery with A constructor that takes a variable named "charge" of type Int class BoomBox with A constructor that takes a variable named "battery" of type Battery A method named "use" that takes no parameters and returns Unit This method will decrease the charge of the BoomBox's battery by 3 If the charge of the battery is less than three, this method does nothing 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 BoomBox's state variable The returned Battery is the one that was in the state variable when the method is called class FlashLight with A constructor that takes no parameters When a new FlashLight is created, declare a state variable named "battery" of type Battery and set it to a new Battery with 5 charge (ie. Batteries included) A method named "use" that takes no parameters and returns Unit This method will decrease the charge of the FlashLight's battery by 1 If the charge is O, this method does nothing 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 FlashLight's state variable The returned Battery is the one that was in the state variable when the method is called Testing: In a package named "tests" create a Scala class named "TestBatteries" as a test suite that tests all the functionality listed above Question: in a package named "execution", implement the following classes: class Battery with A constructor that takes a variable named "charge" of type Int class BoomBox with A constructor that takes a variable named "battery" of type Battery A method named "use" that takes no parameters and returns Unit This method will decrease the charge of the BoomBox's battery by 3 If the charge of the battery is less than three, this method does nothing 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 BoomBox's state variable The returned Battery is the one that was in the state variable when the method is called class FlashLight with A constructor that takes no parameters When a new FlashLight is created, declare a state variable named "battery" of type Battery and set it to a new Battery with 5 charge (ie. Batteries included) A method named "use" that takes no parameters and returns Unit This method will decrease the charge of the FlashLight's battery by 1 If the charge is O, this method does nothing 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 FlashLight's state variable The returned Battery is the one that was in the state variable when the method is called Testing: In a package named "tests" create a Scala class named "TestBatteries" as a test suite that tests all the functionality listed above